Home Physics System of Particles Rotational Motion Torque, Couple A torque of 30 N-m is acting on a wheel of m…
Physics System of Particles Rotational Motion Torque, Couple MCQ (Single Correct)

A torque of 30 N-m is acting on a wheel of mass 5 kg and moment of inertia 2 kg-m 2 .

If wheel starts rotating from rest then, its angular displacement in 10 seconds will be :

A
750 rad
B
1500 rad
C
3000 rad
D
6000 rad

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Text Solution

Verified by Experts
The correct answer is:
D

τ = Ια

30 = 2 × α

⇒ α = 15 rad/sec 2

From equation of angular motion

θ = ω 0 t +

= 0 + × 15 × 10 × 10 = 750 rad

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