Concept explainers
In the figure below Atwood’s machine is drawn - two masses and hanging over a
massive pulley of rotational inertia and radius , connected by a massless unstretchable string.
The string rolls on the pulley without slipping.
a) Find the acceleration of the system and the tensions in the string on both sides of the pulley
in terms of in terms of given variables.
b) Why are the rope tensions on two sides of the pulley not the same? Explain it physically.
c) Suppose mass and the system is released from rest with the masses at equal heights.
When mass has descended a distance , find the velocity of each mass and the angular
velocity of the pulley.
[4***] A string is rolled around a cylinder( kg) as shown in figure. A person pulls on the
string, causing the cylinder to roll without slipping along the floor
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