Question

1. What is the potential energy of a rock that weighs 150 Newtons that is sitting on top of a
hill 200 meters high?​

Answer 1

Step-by-step explanation:

30000 Joules

Given

F = mg = 150N

h-200m

Solution:

PE=mgh

PE= Wh

PE = 150N x 200m

PE = 30000 J

Answer 2

Answer:

The potential energy of the rock is 30,000 J.

Step-by-step explanation:

Given,

The weight of the rock (W) = 150 N

The height at which the rock is present (h) = 200 m

To find,

The potential energy of the rock (P.E)

Concept,

For a body of mass 'm', and which is at a height of 'h', the potential energy (P.E) is given by:

P.E = mgh

OR

P.E = Wh..(1)

Where W = weight of the body

Calculation,

Here the weight of the body (W) = mg = 150N, h = 200 m

Substitute in equation (1):

P.E = 150 × 200

P.E = 30,000 J

Therefore, the potential energy of the rock is 30,000 J.

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