A ring of mass M and radius R sliding with a | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) When the ring enters the rough surface,it is purely sliding forward with velocity $v_0$ and has no initial angular velocity $(\omega = 0)$.$1$. Si

Vedclass · Accepted Answer

All of the above.

Vedclass · Answer

(D) When the ring enters the rough surface,it is purely sliding forward with velocity $v_0$ and has no initial angular velocity $(\omega = 0)$.$1$. Since the ring is sliding,the kinetic friction force $f = \mu N = \mu Mg$ acts on it,which is the limiting friction.$2$. The friction force acts at the point of contact in a direction opposite to the velocity of the point of contact,which is opposite to the direction of motion of the ring.$3$. The friction force $f$ creates a torque $	au = f 	imes R$ about the centre of mass. Since the friction acts at the bottom point towards the left,the torque is in the clockwise direction,which causes an angular acceleration $\alpha$ in the clockwise sense.Therefore,all the given statements are correct.

$A$ ring of mass $M$ and radius $R$ sliding with a velocity $v_0$ suddenly enters a rough surface where the coefficient of friction is $\mu$,as shown in the figure. Choose the correct statement$(s)$.

Similar Questions

$A$ uniform rod of mass $M$ and length $L$ is pivoted at one end and is free to rotate in a vertical plane. The rod is released from a horizontal position. When the rod becomes vertical,the reaction force at the pivot is:

$A$ motor of an engine rotates at an angular speed of $100 \ rpm$ about its axis. When the switch is turned off,it comes to rest in $15 \ s$. How many rotations does it complete before coming to rest?

$A$ rod of mass $m$ and length $l$ is hinged at one end to a horizontal floor and stands vertically. If it is allowed to fall,the velocity with which its upper end strikes the floor is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module