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Q.27

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 199

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Short Answer

A toy train rolls around a horizontal -m-diameter track. The coefficient of rolling friction is . How long does it take the train to stop if it’s released with an angular speed of rpm?

The train will take to stop if it’s released with an angular speed of .

See the step by step solution

Step by Step Solution

Step 1: Given Information

A toy train rolls around a horizontal -m-diameter track. The coefficient of rolling friction is .

Step 2: Explanation

According to the information

Initial speed

Diameter

Radius

Convert rpm to rad/s as follow:

The time take is expressed as follow:

Step 3: Final Answer

The train will take to stop if it’s released with an angular speed of .

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