Question

Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi? (Ans: 3 J). Solve the example.

Answer 1

W=F×S 
 F=10
S=30cm   --->0.3m
 W=0.3×10
    =3 J

Hope it helps u.

Answer 2

Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force

work done = Force × displacement

Force = 10N

Displacement = 30 cm

1m = 100 cm

30cm = 0.3 m

work done by ravi = 10 N × 0.3m

= 3Nm

Nm = NewtonMeter = Joule = J

work done = 3J

so work done by ravi = 3J