sir plz help me, how to find in which direction frictional force act in motions such as pure rolling, sliding, slipping etc in diffrent cases??
Dear student,
Just remember : Direction of frictional force on the object is opposite to the direction in which the object is moving or tending to move.
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Askiitians Expert
Sagar Singh
B.Tech, IIT Delhi
Three identical balls are placed on a frictionless
horizontal surface touching each other. They stick to
each other because of adhesive. Another ball of same
radius and mass m is placed over the void created by
the three balls. Find the forces applied by the balls
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