Question

A block is moving counter-clockwise in a circular path on a flat horizontal table. If the speed of the block is increasing at the moment it is at the position shown. Find out the direction of the acceleration on the block?

• A. $A$
• B. $B$
• C. $C$
• D. $D$
• E. $E$

Answer 1

The correct option is B $B$

Centripetal acceleration $\left(a_r\right)$ always points in the direction towards the centre of the circular motion.

As the speed of the block increases, thus the tangential acceleration $\left(a_t\right)$ is positive and hence points in the direction of velocity.

Thus the net acceleration $\left(a\right)$ points in the direction as shown in the figure i.e the direction of B.