Question

A cylinder is rolling without slipping on a horizontal plane $P$. The friction between the plank $P$ and the cylinder is sufficient for no slipping. The coefficient of friction between the plank and the ground surface is zero. Initially, $P$ is attached with a string $S$ as shown in the figure. If the string is now burned, then

• A. the plank will start motion with a speed $v$ along forward direction
• B. the plank will start motion with a speed $v$ along backward direction
• C. the plank will remain static
• D. linear velocity of the cylinder will decrease and angular velocity will increase

Answer 1

Answer: (C)

Initially there is no friction between cylinder and plank.