A heavy wheel of radius 20 cm and weight 10 kg is to be dragged over a step of height 10 cm, by a horizontal force F applied at the centre of the wheel. The minimum value of F is
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a
20 kgwt
b
1 kgwt
c
10√3 kgwt
d
10√2 kgwt
answer is C.
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Detailed Solution
Height of step = 10 cm; OA = 20 cm; OB = 10 cm Toppling moment about A must be greater than restoring moment about A.
A heavy wheel of radius 20 cm and weight 10 kg is to be dragged over a step of height 10 cm, by a horizontal force F applied at the centre of the wheel. The minimum value of F is