Related Questions
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A particle inside a hollow sphere of radius r, having coefficient of friction μ can rest up to height of
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The unit of work or energy in S.I. units is
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The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)
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Which of the following are vector quantities?
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If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
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4
Moment of inertia of a circular section about an axis perpendicular to the section is
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In the shown figure, the tension (T) in the string will be
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Which of the following are vector quantities?
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The velocity of a particle moving with simple harmonic motion is __________ at the mean position.
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The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as
A. Principle of independence of forces
B. Principle of resolution of forces
C. Principle of transmissibility of forces
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The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
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The resultant of two equal forces P making an angle θ, is given by
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The unit of angular acceleration is
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In order to determine the effects of a force, acting on a body, we must know
A. Magnitude of the force
B. Line of action of the force
C. Nature of the force i.e. whether the force is push or pull
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The maximum frictional force which comes into play when a body just begins to slide over another surface is called
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If a number of forces act simultaneously on a particle, it is possible
A. Not a replace them by a single force
B. To replace them by a single force
C. To replace them by a single force through C.G.
D. To replace them by a couple
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The acceleration of a particle moving with simple harmonic motion, at any instant is given by
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The weight of a body is due to
A. Gravitational pull exerted by the earth
B. Forces experienced by body in atmosphere
C. Force of attraction experienced by particles
D. Gravitational force of attraction towards the centre of the earth
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The force, by which the body is attracted, towards the centre of the earth, is called
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In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
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The acceleration of a body sliding down an inclined surface is
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The rate of change of displacement of a body is called
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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.)
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4
The law of motion involved in the recoil of gun is
A. Newton's first law of motion
B. Newton's second law of motion
C. Newton's third law of motion
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In actual machines, mechanical advantage is __________ velocity ratio.
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A force while acting on a body may
B. Balance the forces, already acting on it
C. Give rise to the internal stresses in it
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The centre of percussion is below the centre of gravity of the body and is at a distance equal to
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Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
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The ratio of limiting friction and normal reaction is known as
A. Coefficient of friction
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When a body of mass moment of inertia I (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is