A thread is wrapped around a cylindrical spool of radius 1.5 cm whose axis is fixed. With constant linear acceleration, 6.28 cm of thread is pulled in 2 s from rest.

Physics · Rotational Motion · rotational constrain motion

JEE Advanced

A thread is wrapped around a cylindrical spool of radius 1.5 cm whose axis is fixed. With constant linear acceleration, 6.28 cm of thread is pulled in 2 s from rest.

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Sub-question 1

What is the angular velocity of the spool at 1.5 sec ?

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Sub-question 2

If the thread was pulled with a constant speed so that it takes 2 sec to pull 6.28 cm of thread. The angular velocity of spool at 1.5 sec is:

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