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Q.

A particle of mass m slides along a curved-flat-curved track. The curved portions of the track are smooth. If the particle is released at the top of one of the curved portions, the particle comes to rest at flat portion of length I and of μ=μkinetic after covering a distance of

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a

l3μ

b

H2μkinetic

c

l6

d

Hμkinetic

answer is D.

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Detailed Solution

Here PE = Work donemgH=μkinetic mgS or S=Hμkinetic
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A particle of mass m slides along a curved-flat-curved track. The curved portions of the track are smooth. If the particle is released at the top of one of the curved portions, the particle comes to rest at flat portion of length I and of μ=μkinetic after covering a distance of