Question
Physical Sciences Question on Work Done By A Variable Force
In which of the following condition the work done by a force is zero?
A
The force acts on a body at an angle 180° to the direction of its displacement.
B
The force acts on a body at an angle 120° to the direction of its displacement.
C
The force acts on a body at an angle 90° to the direction of its displacement.
D
The force acts on a body at an angle 0° to the direction of its displacement.
Answer
The force acts on a body at an angle 90° to the direction of its displacement.
Explanation
Solution
The correct option is (C): The force acts on a body at an angle 90° to the direction of its displacement.