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Laws of Motion
Question
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Assertion:  Centripetal force is always required for motion in curved path. 

Reason:  On a banked curved track, vertical component of normal reaction provides the necessary centripetal force.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.

Answer

C.

If assertion is true but reason is false.

While taking a turn on banked road, the necessary centripetal force is provided by the horizontal component of normal reaction and vertical component balances the weight of the vehicle. Also roads are usually banked for average speed of vehicles passing over them. However, ifthe speed of a vehicle is somewhat less or more than this, the self adjusting static friction will operate between the tyres and the road.

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Some More Questions From Laws of Motion Chapter

State Galileo’s law of motion.

Define inertia.

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Which law of motion is also called law of inertia?

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Which law of motion gives the quantitative knowledge of force?