Question

(a) When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
â(b) How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?

Answer 1

Answer:

1. When a force moves a body. F = mgh, where m is the mass of the body, g is the gravitational constant, h is the height.
2. Given, F = 2N, S = 10 cm = 0.1 m. So, W = F×S =2×0.1= 0.2 Nm

Answer 2

Answer:

HeYa mate option A is the answer