A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body and S = Sum of the squares of the two semi-axes.)
A. 3 MS
B. 4 MS
C. 5 MS
D. None of these
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Which of the following is not the unit of distance?
A. Angstrom
B. Light year
C. Micron
D. Milestone
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Which of the following is not the unit of pressure?
A. kg/cm
B. Bar
C. Atmosphere
D. Newton
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The velocity of a particle moving with simple harmonic motion is _________ at the mean position.
A. Zero
B. Minimum
C. Maximum
D. None of these
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The time of flight (t) of a projectile on an upward inclined plane isα β
A. t = 2 u sin ( α − β ) g cos β
B. t = g cos β 2 u sin ( α − β )
C. t = 2 u sin ( α + β ) g cos β
D. t = g cos β 2 u sin ( α + β )
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One joule is equal to
A. 0.1 N-m
B. 1 N-m
C. 10 N-m
D. 100 N-m
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One joule means that
A. Work is done by a force of 1 N when it displaces a body through 1 m
B. Work is done by a force of 1 kg when it displaces a body through 1 m
C. Work is done by a force of 1 dyne when it displaces a body through 1 cm
D. Work is done by a force of 1 g when it displaces a body through 1 cm
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One kg force is equal to
A. 7.8 N
B. 8.9 N
C. 9.8 N
D. 12 N
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If a body is acted upon by a number of coplanar non-concurrent forces, it may
A. Rotate about itself without moving
B. Move in any one direction rotating about itself
C. Be completely at rest
D. All of these
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The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts.
A. Newton's first law of motion
B. Newton's second law of motion
C. Newton's third law of motion
D. None of these
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When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
A. Simple pendulum
B. Compound pendulum
C. Torsional pendulum
D. Second's pendulum
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When a body falls freely under gravitational force, it possesses __________ weight.
A. No
B. Minimum
C. Maximum
D. None of these
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The resultant of two forces P and Q acting at an angle θ
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The total energy possessed by a system of moving bodies
A. Is constant at every instant
B. Varies from point to point
C. Is maximum in the start and minimum at the end
D. Is minimum in the start and maximum at the end
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The forces which do not meet at one point and their lines of action do not lie on the same plane are known as
A. Coplanar concurrent forces
B. Coplanar non-concurrent forces
C. Non-coplanar concurrent forces
D. None of these
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Which of the following is not the unit of work, energy and heat?
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The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of
A. Friction
B. Limiting friction
C. Repose
D. Kinematic friction
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The algebraic sum of moments of the forces forming couple about any point in their plane is
A. Equal to the moment of the couple
B. Constant
C. Both of above are correct
D. Both of above are wrong
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The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2 , is
A. 20 N
B. 100 N
C. 500 N
D. None of these
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The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.
A. Directly
B. Inversely
C. Square root
D. None of these
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