Give an example: a)In Which a force does negative work b) In which a force does negative work.
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1
Answer:
Explanation:a)pulling a box on head
In this case weight is downward and force is upward
Answered by
1
Answer:
frictional force
Explanation:
frictional force in more cases acts oppostie from the motion of body on rough surface...thus making an angle of 180 degree...as we know W = FScos theta
also cos 180 is negative thus making work done by body as negative
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