A block of mass m is in contact with the cart C as shown in the figure.
Channel: Doubtnut
Date: 2020-08-30

A block of mass m is in contact with the cart C as shown in the figure.  The coefficient of static friction between the block and the cart is `mu`. The acceleration a of the cart that will prevent the block from falling satisfies:  A bridge is in the from of a semi-circle of radius 40m. The greatest speed with which a motor cycle can cross the bridge without leaving the ground at the highest point is