Speed of wheels

Classical Mechanics Level 1

A car is moving at 100 mph 100\text{ mph} down a straight. What is the speed (in mph \text{mph} ) of each of its wheels at the point where they touch the ground?

50 mph 50\text{ mph} 25 mph 25\text{ mph} 0 mph 0\text{ mph} 100 mph 100\text{ mph} None of the choices

Abhyudaya Apoorva by Abhyudaya Apoorva , 27, India

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1 solution

When a wheel rolls, it is moving in two ways: rotationally, around its center, and horizontally, in the direction of the travel. At its point of contact with the ground, both of these motions cancel each other out, leaving a net speed(with respect to the road) of 0

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Isn't this more of a classical mechanics question?

Steven Chase - 4 years, 5 months ago

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I agree. This is perhaps a level 1 classical mechanics problem.

Swapnil Das - 4 years, 5 months ago

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