Question

Fig. 11.2
uestion
1. A force of 7 N acts on an object.
The displacement is, say 8 m, in
the direction of the force
(Fig. 11.3). Let us take it that the
force acts on the object through
the displacement. What is the
work done in this case?
8 m
7N-
Fig. 11.3​

Answer 1

When a force F acts on an object to displace it through a distance S in its direction, then the work done W on the body by the force is given by:

Work done = Force - Displacement

W = F - S Where,

F = 7 N S = 8 m

Therefore, work done, W = 7 — 8 = 56 Nm = 56 J

Answer 2

Answer:

56

Explanation:

W=F×S in the direction of force.

Therefore, w=7×8

w=56joule