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Assertion A small block of mass m is rot...

Assertion A small block of mass m is rotating in a circle inside a smooth cone as shown in figure. In this case the normal reaction,
`N ne "mg cos"theta`
Reason In this case, acceleraion of the block is not along the surface of cone. It is horizontal.

A

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

B

If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.

C

If Assertion is true but Reason is false.

D

If Assertion is false but Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
In vertical direction, ` Ncostheta=mg` In horizontal direction,
`Nsintheta=(mv^(2))/(R)`
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