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3 years ago

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Two wheels, each with the same radius R and the same total mass M, are rotating about their fixed axles. Wheel A is a hoop with

all the mass very near the rim. Wheel B is a disk with the mass spread out uniformly. Which has the larger moment of inertia?

1 answer:

likoan [24]3 years ago

3 0

Answer:

Wheel A

Explanation:

Moment of inertia is the tendency of a body to resist angular acceleration.

The moment of inertia of a body having its mass concentrated away from the axis of rotation will have a higher value.

<u>For a ring, we have the moment of inertia as:</u>

$I=m.r^2$

where:

m = mass of the ring

r = radius of the ring

<u>Moment of inertia for a disc:</u>

$I=\frac{1}{2} m.r^2$

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