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23 Nov 2019

2. Can the total work done on an object during a displacement be negative? If the total work is negative, can its magnitude be larger than the initial kinetic energy of the system? Explain...

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Collen Von
Collen VonLv2
24 Jun 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Which of the following statements about work is or are true? (Morethan one statement may be true.)
A. Negative net work done on an object always reduces the object'skinetic energy.
B. If the work done on an object by a force is zero, then eitherthe force or the displacement must have zero magnitude.
C. If a force acts downward, it does negative work.
D. The formula can be used only if the force is constant over thedistance.

Consider two objects (Object 1 and Object 2) moving in the same direction on a frictionless surface. Object 1 moves with speed v1=v and has inertia m1=2m. Object 2 moves with speed v2=āˆš2 v and has inertia m2=m.

Part A Which object has the larger magnitude of its momentum?

Object 1 has a greater magnitude of its momentum.

Object 2 has a greater magnitude of its momentum.

Both objects have the same magnitude of their momenta

Ā 

. Part B

Which object has the larger kinetic energy?

Object 1 has greater kinetic energy

Object 2 has greater kinetic energy.

The objects have the same kinetic energy.

An object attached to a spring experiences simple harmonic motion (define the potential energy of the object + spring system to be zero when it is in equilibrium).

Question: (a) When the displacement of the object is one-half the maximum amplitude A,

what fraction of the total energy is kinetic, and what fraction is potential?

(b) At what displacement x is the total energy half kinetic and half potential?

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