Question

A force of 50 newtons was necessary to lift a rock. A total of 100 joules was done. How far was the rock lifted?

Answer 1

Force applied = 50 N

Work done = 100 J

We know, W = FS

⇒ S = W/F

⇒ S = (100 J)/(50 N) = (100 Nm)/(50 N)

⇒ S = 2m.

So the rock was lifted to a height of 2 m.

Answer 2

Work done, W = 100 J

Force to lift a rock, F = 50 N

Displacement = s

• W = F × s

• 100 = 50 × s

• s = $\dfrac{100}{50}$

• s = 2 m

$\bold{Hope\;it \; helps\;!}$