Related Questions

The instantaneous center of a rigid thin disc rolling on a plane rigid surface is located at
A the centre of the disc
B the point of contact
C an infinite distance on the plane surface
D the point on the circumference situated vertically opposite to the contact point
A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
A v
B 2v
C 4v
D 8v
The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
At the instantaneous center, the velocity of the moving lamina at any instant is
A Zero
B Maximum
C Minimum
D Varying
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 torsional pendulum
C compound pendulum
D second’s pendulum
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
When a slider moves on a fixed link having curved surface, their instantaneous centre lies
A on their point of contact
B at the centre of curvature
C at the centre of circle
D at the pin joint
The instantaneous centre of a member lies at the point of intersection of two lines drawn at the ends of the member such that the lines are inclined to the direction of motion of the ends at
A 30°
B 45°
C 60°
D 90°
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 $$\frac{{{\text{MS}}}}{3}$$
B $$\frac{{{\text{MS}}}}{4}$$
C $$\frac{{{\text{MS}}}}{5}$$
D None of these
The centre of percussion is below the centre of gravity of the body and is at a distance equal to
A h / kG
B h.kG
C h2/kG
D k2G/h

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