A roller of mass 300kg and of radius 50c...

A roller of mass `300kg` and of radius `50cm` lying on horizontal floor is resting against a step of height `20cm`. The minimum horizontal force to be applied on the roller passing through its centre to turn the roller on to the step is

980 N

1960 N

2940 N

3920 N

Text Solution

Verified by Experts

The correct Answer is:

Clock wise torque = anti clockwise torque
`F (50 - 20 ) = mg (sqrt(50^(2) - 30^(2)))`

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