Classical Dynamics of Particles and Systems
5th Edition
ISBN: 9780534408961
Author: Stephen T. Thornton, Jerry B. Marion
Publisher: Cengage Learning
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A body of mass m is suspended by a rod of length L that pivots without friction (as shown). The mass is slowly lifted along a circular arc to a height h.
a. Assuming the only force acting on the mass is the gravitational force, show that the component of this force acting along the arc of motion is F = mg sin u.
b. Noting that an element of length along the path of the pendulum is ds = L du, evaluate an integral in u to show that the work done in lifting the mass to a height h is mgh.
Suppose we let the radius approach zero. What would happen to the self-potential energy?
Compute for the kinetic energy in ergs and in joules of a 2.0 gram riffle bullet traveling at 500 m/sec?Ans. 2.5 X 109 ergs ; 250 joules
Please give me the solution.
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