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

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

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

Therefore, the force applied is $1 N$ .

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The work done on a body is 5 J. If the displacement of the body is 5 m in the direction of force, Calculate the force applied on the body (in Newton).1

The correct option is A 1Given: Work done, W=5 J Displacement, s=5 m Let the force applied be F From definition of work: W=Fs cosθ. Since the force and displacement are in same direction, θ=00 ⟹F=Ws ⟹F=5 J5 m=1 N Therefore, the force applied is 1 N.

The work done on a body is $5 J$ . If the displacement of the body is $5 m$ in the direction of force, Calculate the force applied on the body (in Newton).
1