A uniform plank of length 5. To what distance x can a person who weighs N walk on the overhanging part of the plank before. Review Conceptual Example 7 before starting this problem. To what distance x can a person who. A uniform plank of length 4.

To what distance x can a person who weighs N walk on the overhanging part of the plank before it just begins to. To what distance, x, can a person who weighs N walk on the overhanging part of the plank before it just. A uniform plank of length 6.

### REALLY stuck on this maths question and its so annoying!?

A uniform plank of lent light 5m and weight N Rests horizontally on two supports with 1. To what distance,X, can a person weighing walk On the overhanging part of the plank before it just begins to tip? A uniform plank AB which is 75m long and has a weight of N and is supported horizontally by two vertical ropes A and B.

Find the tension in each rope A and B. A uniform plank weighing 50N and 12m long is pivoted at a point of 4m from one end. A boy weighing 30N sits on the plank 7m from pivot. Where must his elder brother whose weight is 80N sit to balance the plank horizontally. A boy weighing 30N sits on a plank 7m from pivot.

A large uniform block rests horizontally on two vertical supports one support at the left end of the block and another at a distance from the other end and has a weight hanging from its other end. The block has a mass of kg and a length of 2 meters. A uniform plank of length 3 m is supported by two wooden trestles L and M as shown in the diagram above. L exerts a force of 80n upwards and M a force of N upwards. A uniform wooden plank 68cm long and weighing 38N rest horizontaly on two knife edges each 10cm from the ends of the plank.

A box rests on a plank that is inclined to the horizontal. As the angle between the plank and the horizontal increases, does the component of the weight of the box parallel to the plank increase, decrease, or remain the same? Explain your answer. A horizontal board weighing The plank is 3. The plank serves as a platform for a painter, who weighs One end of a uniform 3. The other end rests against the wall, where it is held by friction as shown in the figure below.

Determine the minimum distance x from point A at which an additional object, also with the same weight Fg, can be hung without causing the rod to slip at point A.

First Name. One end of a uniform 4. The co-efficient of static friction between the wall and the rod is. Consider a lever rod of length 7. The lever rod is pivoted on one end and is supported by a cable attached at a point 1. One end of a uniform 2. The other end rests against the wall, where it is held by friction as shown in the following figure.

Note: There is. A N uniform rectangular sign 4. The left end the rod is supported by a hinge and the right end is supported by a thin cable making a. A uniform rod is 4m long and weighs 10 kg. A uniform, horizontal beam is 5. The beam is hinged at one end to a wall. A N weight is attached to the order end of the beam. The beam is supported by cable at the end opposite the wall. A worker sits at one end of a N uniform rod that is 2. A weight of N is placed at the other end of the rod.

The rod is balanced when the pivot is 0. Calculate the weight of the worker. A Uniform rod AB 3m long weighing 3 Kg is held horizontally by two strong vertical strings at its ends. A weight of 7 kg is hanging on the rod at a distance of 1m from end A and another weight of 12 Kg is hanging at 0. Consider the figure above, where a rigid beam of negligible mass and 10 m long is supported by a cable attached to a spring.

Secondaria “x. xxxxxxxxxxxx”When NO block is hung from the beam, the length L cable-spring is equal to 5 m. Assume that immediately. More Similar Questions. Physics One end of a uniform 3.

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Similar Questions physics One end of a uniform 4. The left end the rod is supported by a hinge and the right end is supported by a thin cable making a asked by Ana on March 19, Physics A uniform rod is 4m long and weighs 10 kg.

The asked by Joe on November 4, Physics A worker sits at one end of a N uniform rod that is 2. Calculate the weight of the worker asked by Meep on November 4, science-physics A worker sits at one end of a N uniform rod that is 2. Calculate the weight of the worker asked by karen on May 15, phy 1.

Ask a New Question.The moment of a force is the turning effect of a force, or the ability of the force to making something turn.

Moment of a force M about a point O is the product of the force F and the perpendicular distance D from the point to the line of action of the force. The turning effect of a force depends on — location of applied force — perpendicular distance between the point of application of the force and the pivot. When a body is in equilibrium, the sum of clockwise moments about the balanced point is equal to the sum of anticlockwise moments about the same point pivot. When the clockwise moment is not equal to the anticlockwise moment, there is a resultant moment and the object will rotate in the direction of resultant moment.

The centre of gravity CG of a body is an imaginery point where the whole weight of the body seems to act in any orientation. The CG of a regular object is at the centre. The CG of an irregular object is determined using a plumb line.

If a body is hanging freely at rest, its CG is always vertically below the pivot, thus the plumb line method works.

SupergirlIt can only be used for flat, irregular objects. Stable equilibrium Object will return to original position after slight disturbance. Unstable equilibrium Object will fall after slight disturbance. A light metre rule is allowed to pivot freely at the zero end.

**Physics - Mechanics: Torque (7 of 7) The Ladder Problem (should be cos(15) at end)**

The other end is supported by a spring balance. A weight of N is then hung at the 40cm mark. The metre rule stays horizontal. What is the reading on the spring balance? Which one of the following activities does not apply the turning effect of a force?

Which one of the following quantities is zero when a uniform rod is supported in the middle?

When a body is at rest, it obeys the a. A uniform metre ruler of weight 0.Hot Threads. Featured Threads. Log in Register. Search titles only. Search Advanced search…. Log in. Contact us. Close Menu. Support PF! Buy your school textbooks, materials and every day products Here! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. As level Non-Uniform Plank question. Thread starter templarbaza Start date Mar 29, Homework Statement A non-uniform plank of wood AB has length 6m and mass 90kg.

The plank is smoothly supported at its two ends A and B, with A and B at the same horizontal level. The plank is in equilibrium and the magnitudes of the reactions at A and B are equal. Find a the magnitude of the reaction on the blank at B, b the distance of the centre of mass of the plank from A. Help would be appreciated. Homework Helper.

Welcome to PF! Hi templarbaza! What do you get? Last edited: Mar 29, A uniform rod AB of length 5. A uniform rod is attached to a wall by a hinge at its base. The rod has a mass of 2. Determine the moment about B of the force exerted by the cord at point Aby resolving that force into horizontal and vertical components applied at point A. Round final answer to two decimal places.

Rod AB is held in place by the cord AC. Determine the moment about B of the force exerted by the cord at point A by resolving that force into horizontal A traffic light hangs from a pole as shown in Fig. The uniform aluminum pole AB is 7. The mass of the traffic light is Determine a the Questions Courses. Oct 17 PM. Siddhant D answered on April 13, Do you need an answer to a question different from the above?

Ask your question! Help us make our solutions better. We want to correct this solution. Tell us more. Was the final answer of the question wrong? Were the solution steps not detailed enough? Was the language and grammar an issue? We appreciate your Feedback Stay Solved :. Didn't find yours? Ask a new question Get plagiarism-free solution within 48 hours. Review Please. Next Previous. Related Questions.

Posted 4 years ago. Posted 5 months ago. Determine the moment about B of the force exerted by the cord at point Aby resolving that force i Posted 2 years ago. The mass of the. When eagles hunt for fish, they catch their prey by diving into the water from a great height When eagles hunt for fish, they catch their prey by diving into the water from a great height. They learned to use gravity to accelerate, and to control their speed using the drag force of their wings.To browse Academia.

Skip to main content. Log In Sign Up. Vector Mechanics for Engineers Chapter Ziad Ibrahim. CQ1 A round object of mass m and radius r is released from rest at the top of a curved surface and rolls without slipping until it leaves the surface with a horizontal velocity as shown.

Will a solid sphere, a solid cylinder or a hoop travel the greatest distance c? All rights reserved. No part of this Manual may be displayed, reproduced or distributed in any form or by any means, without the prior written permission of the publisher, or used beyond the limited distribution to teachers and educators permitted by McGraw-Hill for their individual course preparation.

If you are a student using this Manual, you are using it without permission. CQ2 A solid steel sphere A of radius r and mass m is released from rest and rolls without slipping down an incline as shown.

After traveling a distance d the sphere has a speed v. If a solid steel sphere of radius 2r is released from rest on the same incline, what will its speed be after rolling a distance d?

The vertical thickness of bar A is negligible compared to L. CQ4 In Problem The vertical thickness of bar A is not negligible compared to L. The kg rotor then coasts to rest after revolutions. Knowing that the radius of gyration of the flywheel is 36 in. Disk B is three times as thick as disk A. Disk A is of radius r and has a thickness b, while disk B is of radius nr and thickness 3b. A couple M of constant magnitude is applied when the system is at rest and is removed after the system has executed 2 revolutions.

Determine the value of n which results in the largest final speed for a point on the rim of disk B. It is desired that the speed of the flywheel after one punching be not less that 90 percent of the original speed of rpm. Each punching operation requires J of work. Position 1. Only force doing work is F. Knowing that the initial angular velocity is rpm clockwise, determine the force which must be exerted by the hydraulic cylinder if the system is to stop in 75 revolutions.

Netgear block servicesPrinciple of work and energy. Determine a the number of revolutions of gear C required for its angular velocity to increase from to rpm, b the corresponding tangential force acting on gear A.

The system is at rest when the couple M0 is applied to shaft C. Denoting by I0 the moment of inertia of a gear of radius r, determine the angular velocity of shaft A if the couple M0 is applied for one revolution of shaft C. Cylinder A and block B are attached to cords that are wrapped on the pulleys as shown. The coefficient of kinetic friction between block B and the surface is 0. Let rA be the radius of the outer pulley and rB that of the inner pulley.

Let T3 be its kinetic energy when A strikes the ground. Assuming that no slipping occurs between the gears, determine the number of revolutions required for disk A to reach an angular velocity of rpm. It is released from rest in a horizontal position and swings freely. Determine a the distance b for which the angular velocity of the rod as it passes through a vertical position is maximum, b the corresponding values of its angular velocity and of the reaction at C. In the position shown he has a small and negligible clockwise angular velocity and will maintain his body straight and rigid as he swings downward.

Assuming that during the swing the centroidal radius of gyration of his body is 1.Hot Threads. Featured Threads. Log in Register. Search titles only. Search Advanced search…. Log in. Contact us. Close Menu. Support PF! Buy your school textbooks, materials and every day products Here! JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Past paper moments question.

Thread starter icvotria Start date May 14, I'm stuck! This is the question: A uniform rod AB has length 3m and weight N. The rod remains in equilibrium and the magnitude of the reaction at C is now twice the magnitude of the reaction at D.

I can't figure out how to bring the 'pre-W' results and the 'post-W' results together, and I'm not even really sure if that's what I'm supposed to be doing! Could someone point me in the right direction please? Last edited: May 14, OlderDan Science Advisor.

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Poultry farming project plan pdfLast edited: May 15, OlderDan said:. You must log in or register to reply here. Related Threads on Past paper moments question Polarisation past paper question. Last Post Jan 1, Replies 1 Views Past paper question about rates. Last Post Dec 3, Replies 2 Views 1K. Physics past paper question - hard disks. Last Post May 22, AEA past papers? Last Post Jul 26, Replies 2 Views 5K.

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