Question

2. An object thrown at a certain angle to the ground moves in a<br />curved path and falls back to the ground. The initial and the<br />final points of the path of the object lie on the same horizontal<br />line. What is the work done by the force of gravity on the object​

Answer 1

Answer:

the work done by the force of gravity on object is to pull the object towards itself.

Answer 2

Explanation:

Work is done when force applied produce motion in the direction of the force.

In this case :-

But the displacement of the body is the horizontal direction.

Since, angle between force and displacement is 90°.

Now, the work done is 0 as the initial and final velocity are on the same path so the height will be 0.

Force is applied in the vertical direction.

We know that,

★ W = m × g × h ★

where,

Work = Work Done

m = Mass

g = Gravity

h = Height

⇒ W = m × g × h

⇒ W = m × g × 0

➠ W = 0 J