Related Questions
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The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is
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Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
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4
Coefficient of friction is the
A. Angle between normal reaction and the resultant of normal reaction and the limiting friction
B. Ratio of limiting friction and normal reaction
C. The friction force acting when the body is just about to move
D. The friction force acting when the body is in motion
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4
The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is
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The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is
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If the gravitational acceleration at any place is doubled, then the weight of a body will be
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Moment of inertia of a circular section about its diameter (d) is
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The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by
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If a number of forces are acting at a point, their resultant will be inclined at an angle θ with the horizontal, such that
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The maximum height of a projectile on a horizontal plane, is
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The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)
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The coefficient of restitution for inelastic bodies is
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Which of the following statement is correct?
A. The algebraic sum of the forces, constituting the couple is zero
B. The algebraic sum of the forces, constituting the couple, about any point is the same
C. A couple cannot be balanced by a single force but can be balanced only by a couple of opposite sense
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In the shown figure, the tension (T) in the string will be
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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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Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.
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The C.G. of a plane lamina will not be at its geometrical centre in the case of a
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A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The centre of gravity of the section will lie
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A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)
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Coulomb friction is the friction between
A. Bodies having relative motion
C. Two lubricated surfaces
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The resolved part of the resultant of two forces inclined at an angle θ in a given direction is equal to
A. The algebraic sum of the resolved parts of the forces in the given direction
B. The sum of the resolved parts of the forces in the given direction
C. The difference of the forces multiplied by the cosine of θ
D. The sum of the forces multiplied by the sine of θ
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The moment of inertia of a solid sphere of mass m and radius r is
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During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
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A smooth cylinder lying on a __________ is in neutral equilibrium.
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In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)
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A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
A. Towards the wall at its upper end
B. Away from the wall at its upper end
C. Downward at its upper end
D. Upward at its upper end
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Two blocks A and B of masses 150 kg and 50 kg respectively are connected by means of a string as shown in the below figure. The tension in all the three strings __________ be same.
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The motion of a particle round a fixed axis is
D. Translatory as well as rotary
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A framed structure, as shown in the below figure, is a
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According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)