Start Free Mock LoginAlready registered? Login here

Physics - Rotation Question with Solution | TestHub

PhysicsRotationRotational KinematicsHard2 minPYQ_2013

PhysicsHardsingle choice

A table fan rotating at a speed of $2400 rpm$ is switched off and the resulting variation of revolution/minute with time is shown in figure. The total number of revolutions of the fan before it, comes to rest is

Options:

Answer:

Solution:

Total number of revolutions $=$ area under $n - t graph = \frac{1}{2} \times 8 \times \frac{1800}{60} + 8 \times \frac{600}{60} + \frac{1}{2} \times 16 \times \frac{600}{60} = 120 + 80 + 80 = 280$

Stream:VITEEESubject:PhysicsTopic:RotationSubtopic:Rotational Kinematics

⏱ 2mℹ️ Source: PYQ_2013

Doubts & Discussion

Loading discussions...