Q. 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

View solution

Q. The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by

View solution

Q. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.

View solution

Q. The centre of gravity of a right angled triangle lies at its geometrical centre.

View solution

Q. Vectors method for the resultant force is also called polygon law of forces.

View solution

Q. Two equal and opposite parallel forces whose lines of action are different form a couple.

View solution

Q. When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.

View solution

Q. The maximum velocity of a particle moving with simple harmonic motion is

View solution

Q. The loss of kinetic energy due to direct impact of two bodies __________ upon the value of coefficient of restitution.

View solution

Q. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

View solution

Q. The unit of power in S.I. units is

View solution

Q. The velocity ratio for the second system of pulleys is n.

View solution

Q. The law of motion involved in the recoil of gun is

View solution

Q. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.

View solution

Q. A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.

View solution

Q. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

View solution

Q. The forces, which meet at one point and their lines of action also lie on the same plane, are known as

View solution

Q. The amount by which the outer edge of the rail is raised, is known as super-elevation.

View solution

Q. The unit of energy in S.I. units is

View solution

Q. The angle of inclination of the plane at which the body begins to move down the plane, is called

View solution