Question

A ball placed on a table starts rolling when table is tilted. Which force(s) which causes this motion?

• A. Friction
• B. Push by table
• C. Rolling force
• D. Gravitational pull by earth

Answer 1

Answer: (A), (D)

The correct options are
A Friction
D Gravitational pull by earth

When the ball is placed on tilted tale it starts rolling because of the force of gravity pulls it downward along the plane of table and frictional force produces torque which generate rotational motion as a result body will start rolling.

Push of the table will be used to generate frictional force $f=\mu .N$

So the answer to the question should be A and D.