3. A roller of weight 500 N has a radius of 120 mm and is pulled over a step of height 60 mm by a horizontal force P. Find magnitude of P to just start the roller over the step. (Refer figure) A P r=120 mm 17.50 60 mm (a) 210 N (b) 279 N (d) 291 N (c) 288 N B

3. A roller of weight 500 N has a radius of 120 mm and is pulled over a step of height 60 mm by a horizontal force P. Find magnitude of P to just start the roller over the step. (Refer figure) A P r=120 mm 17.50 60 mm (a) 210 N (b) 279 N (d) 291 N (c) 288 N B

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter14: Static Equilibrium, Elasticity, And Fracture

Section: Chapter Questions

Problem 49PQ

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Concept explainers

Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.

Equilibrium of Forces

The tension created on one body during push or pull is known as force.

Question

3. A roller of weight 500 N has a radius of 120 mm and is
pulled over a step of height 60 mm by a horizontal force
P. Find magnitude of P to just start the roller over the step.
(Refer figure)
A
P
r-120 mm
(a) 210 N
(c) 288 N
B
60 mm
(b) 279 N
(d) 291 N (0)

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