Rotational MotionHard
Question
A mass m hangs with the help of a string wrapped around a pulley on a frictionlessbearing. The pulley has mass m and radius R. Assuming pulley to be a perfect uniformcircular disc, the acceleration of the mass m, if the string does not slip on the pulley, is
Options
A.g
B.
C.
D.
Solution
Mg -T = Ma ......(i)
T × R = 1α =
MR2α T =
Ma (a = 
R) .....(ii)From (1) and (2) a =
Create a free account to view solution
View Solution FreeMore Rotational Motion Questions
If the earth is a point mass of 6 × 1024 kg revolving around the sun at a distance of 1.5 × 108 km and in time...Off two eggs which identical sizes, shapes and weights, one is raw and the other is half - billed. The ratio between the...The angular velocity of a body changes from ω1 to ω2 without applying torque. The ratio of initial of gyration...A uniform rod AB of length is free to rotate about a horizontal axis passing through A. The rod is released from rest fr...Hydrogen atom is excited from ground state toanother state with principal quantum numberequal to 4. Then the number of s...