Chapter 10: Q. 65 (page 259)
Write a realistic problem for which the energy bar chart shown inFIGURE P10.65 correctly shows the energy at the beginning and end of the problem.
Given in the explanation.
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is the potential-energy diagram for a particle that is released from rest at A. What are the particleโs speeds at B, C, and D?
What height does a frictionless playground slide need so that a 35 kg child reaches the bottom at a speed of 4.5 m/s?
The three balls in FIGURE , which have equal masses, are fired with equal speeds from the same height above the ground. Rank in order, from largest to smallest, their speeds va, vb, and vc as they hit the ground. Explain.
An object moving in the xy-plane is subjected to the force , where x and y are in m.
a. The particle moves from the origin to the point with coordinates by moving first along the x-axis to , then parallel to the y-axis. How much work does the force do?
b. The particle moves from the origin to the point with coordinates by moving first along the y-axis to , then parallel to the x-axis. How much work does the force do?
c. Is this a conservative force?
A particle that can move along the x-axis is part of a system with potential energy
where A and B are positive constants.
a. Where are the particleโs equilibrium positions?
b. For each, is it a point of stable or unstable equilibrium?
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