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Pooja singh Grade: 11
        

in rolling motion how do we judge the direction of friction. and how can we judge the direction in wich the body will roll without knowing it's direction. plz explain....

6 years ago

Answers : (2)

Aniket Patra
48 Points
										

The direction of the net supporting torque will give the direction of rolling.

6 years ago
SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


Before the ball conforms to smooth rolling motion, that the sliding friction force acts in the direction opposite of the displacement of the ball, and I pretty much just treat the ball like a block that is sliding on a floor with friction. Then after determining when the ball begins smooth rolling motion, I imagine that there is a static frictional force acting in the direction of displacement and opposite of the rolling of the ball.


 













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6 years ago
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