In soap box car races, the cars are boxes with wheels. They begin at rest at the

ID: 1631898 • Letter: I

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In soap box car races, the cars are boxes with wheels. They begin at rest at the top of a hill, and at the start of the race they all begin rolling down the hill. The soap box car that reaches the bottom of the hill first is the winner. You have entered a soap box car race where the rule is that all the wheels and cars must have equal mass. Since you have taken Physics, you know that it is worse to have wheels with spokes (where the mass is mostly on the rim) rather than solid wheels because

a.) The solid wheels are easier to paint.

Explanation / Answer

First of all we have to understood that the
torque = moment of inertia *angular acceleration -------------(1)
Now moment of inertia of solid wheel = mr2/2
Whereas moment of inertia of wheel with spokes = mr2
Now from the equation1 we can understand that higher the moment of inertia lower the angular acceleration
will be.
hence we do not prefer the wheel with spoke.
So the correct option will be "d".

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In soap box car races, the cars are boxes with wheels. They begin at rest at the

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In soap box car races, the cars are boxes with wheels. They begin at rest at the

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