JEE Advanced Model Paper 6 with solutions for online practice

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Passage-I

A small block of mass 1kg is released from rest at the top of a rough track. The track is acircular arc of radius 40m. The block slides along the track without toppling and a frictionalforce acts on it in the direction opposite to the instantaneous velocity. The work done inovercoming the friction up to the point Q, as shown in the figure below (g = 10 m/s2) is 150J
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Question : 11 of 60
 
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The magnitude of the normal reaction that acts on the block at the point Q is n(2.5) NewtonThen the value of ‘n’ is
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