A small block of mass 1 kg is released from rest at the top of a rough circular track of radius 40 m. It slides without toppling. The work done against friction up to point Q is 150 J. Take g=10 m/s².

Physics · Work , Power and Energy · kinetic enegy and work engery theorem

JEE Advanced 2013

A small block of mass 1 kg is released from rest at the top of a rough circular track of radius 40 m. It slides without toppling. The work done against friction up to point Q is 150 J. Take g=10 m/s².

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Sub-question 1

For the rough circular track described in the paragraph, the normal reaction at point Q is:

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Sub-question 2

For the same rough circular track, the speed of the block at point Q is:

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