Correct Answer - Option 2 : 50 Nm
CONCEPT:
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Work is said to be done by a force when the body is displaced actually through some distance in the direction of the applied force.
- Since the body is being displaced in the direction of F, therefore work done by the force in displacing the body through a distance s is given by
\(W = \vec F \cdot \vec s\)
W = Fs cos θ
Where θ = angle between force direction of motion
- Thus work done by a force is equal to the scalar or dot product of the force and the displacement of the body.
-
SI unit of work is Joule (J).
CALCULATION:
Given - Force (F) = 10 N, displacement (s) = 5 m and, θ = 0°
- The work done can be calculated as,
⇒ W = Fs cos θ
⇒ W = 10 × 5 × cos 0° = 50 Nm