Question

1)A vessel of base area 100 cm X 60 cm and height 200 cm is completely filled with a liquid of density 1100 kg m -3 . Ignoring the atmospheric pressure, find: (i) the thrust at the bottom of the vessel, (ii) the pressure at the bottom of the vessel, (iii) the pressure at the depth of 5 cm from the free surface, (iv) the net force experinced by a metal foil of area 10 cm 2 placed at a depth of 5 cm from the free surface. 2)A body of certain mass is released from a window present at height 11.25 m above the ground. Calculate (Take g =10 m s -2 ) (i) The velocity with which it strikes the ground (ii) The time taken by the mass to reach the ground 3)A ball of mass 10 g is moving with a velocity of 50m s -1 . On applying a constant force on a ball for 2 s , it aquires a velocity of 70 m s -1 .Calculate: (i) the initial momentum of ball, (ii) the final momentum of ball, (iii) Acceleration of ball, (iv) magnitude of force applied. 4)A spherical body of mass 60 kg attracts a body of mass 40 kg with a force equal to 4 X 10 -5 . Calculate the distance between them. (take G = 6 X 10 -11 N m 2 kg -2 ) 5)A bullet moving with a velocity of 15 ms -1 strikes a block of wood and is brought to rest within 30 cm. Calculate: (i) Its average retardation (ii) the time taken 6)In a hydraulic machine, area of a smaller piston A 1 = 0.2 m 2 and that of larger piston is A 2 = 1.2m 2 . The effort applied on A 1 is 40N. Calculate (i) The pressure applied (ii) The pressure transmitted (iii) The maximum load that can be raised by pressure transmitted. NEED STEP BY STEP EXPLANATION URGENTLY

Answer 1

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Answer 2

Answer:

its only one question or more