3 A particle starts from rest with constant acceleration If first distance S is covered in time t then the time taken to cover

Question

3 A particle starts from rest with constant acceleration If first distance S is covered in time t then the time taken to cover next 2S distance is 2 3 2 t 1 2 1 t 3 3 1 t 4 8 The velocity of a swimmer in still water is vand water current in river is V2 The swimmer is applying strokes perpendicular to water current If d is width of river the time taken by the swimmer to cross river is 1 v 2 2 kg MO d PHYSICS In the given arrangement pulley and strings are ideal The force applied by pulley on the table is g 10 ms2 2 kg 3 4 15 1 10 N 2 20 N 3 10 2 N 4 20 2 N A bomb is projected with velocity v at an angle with the horizontal At maximum height it explode into two equal parts If one piece retraces its pati at what distance from point of projection othe piece with strike the ground 1 vsin 20 9 3 3 v sin 20 12 v sin 20 2g A solid sphere of mass M and radius R is concentric with a thin spherical shell of mass M and radius 2R The gravitational potential at distance x from their common centre is 2R x R 2 26 2v sin 20 9 4

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