Question

A disc is pulled by a force $F$ acting at a point above the centre of mass of the disc. The direction of frictional force $\left(f_r\right)$ acting on disc pushed on a rough surface will be represented by

• A. Diagram
• B. Diagram
• C. Information is insufficient
• D. Diagram

Answer 1

The correct option is D Diagram

For finding direction of friction force,
As $K^2<Rx$
$K^2=\frac{R^2}{2},x=R$
Therefore, friction force will act rightward.