SSC JE Mechanical Engineering 2018 Set 2 Paper

Question : 105 of 200

Marks: +1, -0

The mass of flywheel of a steam engine is 3250 kg with the radius of gyration of 1 m. The starting torque of the engine is 4500 N-m. What is the angular acceleration (rad/s

^{2}

) of the flywheel?

3.4
2
2.48
1.38

Validate

Solution:

Given value :
mass of flywheel (M) = 3250 kg
radius of gyration (K) = 1 m
starting torque (T) = 4500 N-m
angular acceleration (α) = ?
we know T = I α where I = moment of inertia = mr

^{2}

450 = 3250 × 12 × α= 3250 × 1^2

α=450/325

α=1.38

rad/sec

^{2}

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