Question

A flywheel ensures a smooth ride on the vehicle because of its:

• A. Larger speed
• B. Zero moment of inertia
• C. Large moment of inertia
• D. Lesser mass with smaller radius
• E. Small moment of inertia

Hint:

The effectiveness of a flywheel in smoothing out a ride comes from its large moment of inertia, which helps to stabilize the rotational speed and energy fluctuations.

Answer 1

The Correct Option is C

A flywheel is used in vehicles to store rotational energy and help maintain a smooth ride. This is because it resists sudden changes in rotational speed due to its moment of inertia. The flywheel has a large moment of inertia, which means it is resistant to changes in rotational motion. This property helps to smooth out fluctuations in the engine's power output, ensuring a steady operation.
A larger moment of inertia allows the flywheel to absorb and release energy efficiently, making it an essential component in maintaining stability and smooth motion.
Why the other options are incorrect:
- (A) Larger speed: Speed alone doesn't necessarily contribute to a smooth ride. It is the ability to store energy that helps.
- (B) Zero moment of inertia: A zero moment of inertia would mean no resistance to rotational changes, which would not help in maintaining a smooth ride.
- (D) Lesser mass with smaller radius: A smaller moment of inertia would make the flywheel less effective in maintaining a smooth ride.
- (E) Small moment of inertia: A small moment of inertia would result in less energy storage capability, which would not smooth out the ride.
Thus, the correct answer is option (C), large moment of inertia.