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Question

Why a horse need to pull harder during the first few steps in pulling the cart?

A

Limiting friction is greater than dynamic friction.

B

Sliding friction is greater then rolling friction.

C

No frictional force acts after the cart comes in motion.

D

Air friction is greater is greater during first few stops of motion.

Easy

Solution

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Correct option is
A

Limiting friction is greater than dynamic friction.

In firs few steps , horse has to overcome the limiting friction ,after this dynamic friction comes into play , which is less than limiting friction therefore horse need to pull harder during the first few steps in pulling the cart .

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