Raju opens a nut with the help of a spanner of length 20cm by applying a force of 100N. What should be the minimum length of the spanner if his younger brother Jai opens it with a force of 40N?
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Explanation:
Moment of force = f×d
F=100n,d=20cm
100×20=200nm
200nm=40×d
D=200/40
=5cm
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