A 9.50-g bullet, moving horizontally withan initial speed v0, embeds itself in a 1.45-kg pendulum bob that isinitially at rest. The length of the pendulum is L = 0.745 m. Afterthe collision, the pendulum swings to one side and comes to restwhen it has gained a vertical height of 12.4 cm. (a) Is the kineticenergy of the bullet–bob system immediately after the collisiongreater than, less than, or the same as the kinetic energy of thesystem just before the collision? Explain. (b) Find the initial speedof the bullet. (c) How much time does it take for the bullet–bobsystem to come to rest for the first time?
A 9.50-g bullet, moving horizontally withan initial speed v0, embeds itself in a 1.45-kg pendulum bob that isinitially at rest. The length of the pendulum is L = 0.745 m. Afterthe collision, the pendulum swings to one side and comes to restwhen it has gained a vertical height of 12.4 cm. (a) Is the kineticenergy of the bullet–bob system immediately after the collisiongreater than, less than, or the same as the kinetic energy of thesystem just before the collision? Explain. (b) Find the initial speedof the bullet. (c) How much time does it take for the bullet–bobsystem to come to rest for the first time?
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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Question
A 9.50-g bullet, moving horizontally with
an initial speed v0, embeds itself in a 1.45-kg pendulum bob that is
initially at rest. The length of the pendulum is L = 0.745 m. After
the collision, the pendulum swings to one side and comes to rest
when it has gained a vertical height of 12.4 cm. (a) Is the kinetic
energy of the bullet–bob system immediately after the collision
greater than, less than, or the same as the kinetic energy of the
system just before the collision? Explain. (b) Find the initial speed
of the bullet. (c) How much time does it take for the bullet–bob
system to come to rest for the first time?
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