Question

Give the formula describing the work done in (a) moving a body through a certain distance in the direction of force (b) lifting a body to certain height from the earths surface

Answer 1

a) workdone = Force × Displacement.
b) workdone = Mass × Acceleration due
to gravity (g) × height


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Answer 2

Work is the energy transfered to or from an object by means of any force acting on the object

(a) Workdone = Force x displacement

(b) when lifting a body, it is affected by acceleration due to gravity g

Taking m = mass of body
h = height through which the body is moved = displacement
F = m x g
Work done = m x g x h