A 300-kg crate is to be supported by therope-and-pulley arrangement shown.Determine the magnitude and directionof the force P that must be exerted onthe free end of the rope to maintainequilibrium. (Hint: The tension in therope is the same on each side of a simplepulley. This can be proved by themethods of Chap. 4.)2.4 m0.7 mBAKα

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300-kg crate is to be supported by the be-and-pulley arrangement shown. termine the magnitude and direction the force P that must be exerted on e free end of the rope to maintain uilibrium. (Hint: The tension in the be is the same on each side of a simple lley. This can be proved by the ethods of Chap. 4.) 2.4 m 0.7 m B A α

300-kg crate is to be supported by the be-and-pulley arrangement shown. termine the magnitude and direction the force P that must be exerted on e free end of the rope to maintain uilibrium. (Hint: The tension in the be is the same on each side of a simple lley. This can be proved by the ethods of Chap. 4.) 2.4 m 0.7 m B A α

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest. 

Question

A 300-kg crate is to be supported by the
rope-and-pulley arrangement shown.
Determine the magnitude and direction
of the force P that must be exerted on
the free end of the rope to maintain
equilibrium. (Hint: The tension in the
rope is the same on each side of a simple
pulley. This can be proved by the
methods of Chap. 4.)
2.4 m
0.7 m
B
A
K
α

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