Question

The work done on a body is $5J$. If the displacement of the body is $5m$ in the direction of force, Calculate the force applied on the body (in Newton).

• A. 1

Answer 1

The correct option is A 1
Given:
Work done, $W=5J$
Displacement, $s=5m$
Let the force applied be $F$
From definition of work:
$W=Fscos\theta$.
Since the force and displacement are in same direction, $\theta =0^0$

$⟹F=\frac{W}{s}$
$⟹F=\frac{5J}{5m}=1N$

Therefore, the force applied is $1N$.