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101.

The moment of inertia of a semi-circle of radius r with respect to a centroidal axis parallel to the diameter is

A.	0.055 r2	B.	0.05 r2
C.	0.11 r2	D.	0.22 r2
E.	0.33 r2

102.

The statement the resultant of the external forces applied to a body (rigid or non-rigid) composed of a system of particles is equivalent to the vector summation of the effective forces acting on all particles-is known as

A.	Nowton's law	B.	Corollary to Newton's laws of motion
C.	Mohr's principle	D.	D' Alembert's principle
E.	Principle of dynamics

103.

Which of the following is scalar quantity

A.	Displacement of a particle	B.	Velocity a gear
C.	Acceleration of car	D.	Force of friction
E.	Area of triangle

104.

The angular velocity of hour hand of a watch is

A.	0.1045 sec-1	B.	0.001745 sec-1
C.	0.0001455 sec-1	D.	0.0001745 sec-1
E.	0.0000145 sec-1

105.

The angular velocity of seconds hand of a watch is

A.	0.1047 sec-1	B.	0.01745 sec-1
C.	0.001745 sec-1	D.	0.0001745 sec-1
E.	0.00001745 sec-1

106.

How many coins 0.75 cm in diameter and 1/8 cm thick must be malted down to form a rectangular solid whose edges are 5 cm. 4 cm and 3 cm?

A.	1087	B.	584
C.	1234	D.	2174

107.

The angular velocity of earth is

A.	0.00727 sec-1	B.	0.000727 sec-1
C.	0.0000727 sec-1	D.	0.00000727 sec-1
E.	None of the above

108.

A flywheel starting from rest and accelerating uniformly performs 25 revolutions in 5 sec. Its angular velocity in rpm after 10 seconds would be

A.	20 rpm	B.	25 rpm
C.	45 rpm	D.	50 rpm
E.	60 rpm

109.

If two bodies one light and one heavy have equal kinetic energies, which one has a greater momentum?

A.	Heavy body	B.	Light body
C.	Both have equal momentum	D.	Momentum depends on velocities
E.	Nothing can be concluded on the basis of information provided

110.

A ball is allowed to fall freely from a height of 3 metres on to a fixed plate. If the successive rebound heights are h1, h2, h3

A.	Zero	B.	0.5 metre
C.	1 metre	D.	4.25 metre
E.	5 metres