COMPULSORY
: To be attempted by all candidates.Q 1 (a)(i)How fast should a man weighing 60 Kg run so that his Kinetic energy
is 750 J?(ii) A body of mass 1 Kg is thrown vertically up with an initial sped of 5 m/s. What is the magnitude and direction
of force due to gravity 
acting on the body when it is at its highest point?Q 1 (b)Diagram
given below shows a weightless lever in equillibrium
. Neglect friction at the fulcrum F.(i) State the principle of moments as applied to the above lever.
(ii) Define mechanical
advantage and calculate its value for the given lever.(iii) Name the type of lever which has mechanical advantage greater than 1.
Q 1 (c) A body weighs 20 gf in air, 18.2 gf in a liquid and 18.0 gf in water.
Calculate:
(i) The relative density of the body , and
(ii) The relative density of the liquid.
Calculate:
(i) The relative density of the body , and
(ii) The relative density of the liquid.
of 
of ice’. Give its S.I unit.(ii) What is the effect of increase in pressure on the melting point of ice 
and boiling point of water ?
and boiling point of water ?
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