A car which is stuck in mud can be pulled out with the aid of a wooden plank. The function of the wooden plank is to _________.

increase friction

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decrease friction

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give direction to the car

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reduce weight of the car

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Solution

The correct option is A
increase friction

Cars are designed to drive on roads, where there is friction between the tyres and the road surface. Mud is soft and slippery, which reduces friction and makes it difficult for the car to move. Using a wooden plank provides required friction and the car can be pulled out.

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