Question

Work is said to be done only when a body undergoes displacement in the direction of the applied
W=Fs
a) A force of 100 N is applied continuously on a body. If the body undergoes a displacement of
20 m. Find out the magnitude of the work done by the force?
b) An object resting on a floor is dragged, it is displaced in the direction of force applied. What
is the force that causes negative work, when it is dragged through the floor?​

Answer 1

ANSWER =a

work done = Force x displacement

W = FXS

w = 1000×20

= 2000J

Answer 2

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a)Force(F)=100N

Displacement (s)=20m

Work done= F×S

= 100×20

Work Done = 2000J

b)Gravity does negative work here because gravity goes in the opposite direction as the displacement.