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sammy [17]
2 years ago
13

When an object is lifted 12 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 2

4 meters off the ground, its potential energy is
A.
the same.
B.
three times as much.
C.
twice as much.
D.
four times as much.
Physics
1 answer:
alexandr402 [8]2 years ago
8 0
I think the answer is twice as much
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Answer:

tan \theta = \mu_s

Explanation:

An object is at rest along a slope if the net force acting on it is zero. The equation of the forces along the direction parallel to the slope is:

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Solving for R,

R=mg cos \theta

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mg sin \theta - \mu_s mg cos \theta = 0

Re-arranging the equation,

sin \theta = \mu_s cos \theta\\\rightarrow tan \theta = \mu_s

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