Identify which of the situations below exhibits the following energy transfer: W

ID: 306609 • Letter: I

Question

Identify which of the situations below exhibits the following energy transfer:

Wext??Eth, ?K=0, ?Ug=0

Usp??Eth, ?K=0, ?Ug=0, Wext=0

Ug?K, ?Eth=0, Wext=0

Wext?K, ?Eth=0, ?Ug=0

Ug??Eth, ?K=0, Wext=0

( ) A ball is dropped from the top of a building and gains speeds as it falls to the ground

( ) A box slides down a rough incline at constant speed

( ) compressed spring pushes on a box, which then slides across a rough horizontal surface until the box comes to rest

( ) A box is pushed across a horizontal, frictionless surface.

( ) A box is pushed along a horizontal, rough surface at a constant speed

Wext??Eth, ?K=0, ?Ug=0

Usp??Eth, ?K=0, ?Ug=0, Wext=0

Ug?K, ?Eth=0, Wext=0

Wext?K, ?Eth=0, ?Ug=0

Ug??Eth, ?K=0, Wext=0

1. Wext??Eth, ?K=0, ?Ug=0 (A box is pushed across a horizontal, frictionless surface.)

2. Usp??Eth, ?K=0, ?Ug=0, Wext=0 (compressed spring pushes on a box, which then slides across a rough horizontal surface until the box comes to rest)

3. Ug?K, ?Eth=0, Wext=0 (A ball is dropped from the top of a building and gains speeds as it falls to the ground)

4. Wext?K, ?Eth=0, ?Ug=0 (A box is pushed along a horizontal, rough surface at a constant speed)

5. Ug??Eth, ?K=0, Wext=0 (A box slides down a rough incline at constant speed)

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