why work is not done when a force acts at right angles to the direction of displacement
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Work done is given by: FScos(theta).
F= magnitude of force
S= magnitude of displacement
(theta)=angle between force and displacement.
cos(90°)=0,
hence,
work done is zero.
F= magnitude of force
S= magnitude of displacement
(theta)=angle between force and displacement.
cos(90°)=0,
hence,
work done is zero.
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