what is the physical quantity that measures the turning effect of the spanner? Write the formula for that physical quantity.
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(i) Horse Power (hp) is another unit of Power.
1 hp =745.7 watt
(ii) Given: Force=2N, d=20cm=0.2m
Moment of force = Force × distance
=2×0.2
=0.4Nm
(iii) Work done is said to be negative when a force opposes the motion or tries to stop a moving body. Since the fielder tries to stop the moving ball, his work done is negative.
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