If a body is thrown upwards, then the gravitational acceleration is taken as zero.

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

The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

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

The ideal angle of banking provided on the curves on roads depends upon

The moment of inertia of a square of side (a) about an axis through its centre of gravity is

The law of motion involved in the recoil of gun is

The centre of gravity of a triangle lies at a point where its medians intersect each other.

The velocity ratio of a first system of pulleys with 4 pulleys is

The maximum mechanical advantage of a lifting machine is

The amplitude is always __________ radius of the circle.

The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplaner non-concurrent forces.

If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.

The friction experienced by a body, when at rest, is known as

An ideal machine is one whose efficiency is

In a single threaded worm and worm wheel, the number of teeth on the worm isThe diameter of the effort wheel ismm and that of load drum ismm. The velocity ratio is

In a single threaded worm and worm wheel, the number of teeth on the worm isThe diameter of the effort wheel ismm and that of load drum ismm. The velocity ratio is

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

The velocity ratio for the third system of pulleys is

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. I_P) is given by(where, A = Area of the section, I_G = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

A non-reversible machine is also called a self-locking machine.

A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

Joule is the unit of

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

If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.

The velocity ratio for the third system of pulleys is

The velocity ratio of a single purchase crab winch can be increased by

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.

In order to double the period of simple pendulum, the length of the string should be

One joule means that

A machine having an efficiency greater than 50%, is known as

When a body falls freely under gravitational force, it possesses __________ weight.

The moment of inertia of a solid sphere of mass m and radius r is

The velocity of a body on reaching the ground from a height h, is

The energy possessed by a body, for doing work by virtue of its position, is called

The total motion possessed by a body, is called

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

The wheels of a moving car possess

A pendulum which executes one beat per second is known as

When a body falls freely under gravitational force, it possesses __________ weight.

The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is

If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.

If the gravitational acceleration at any place is doubled, then the weight of a body will be

The resultant of two equal forces P making an angle θ, is given by

Mass moment of inertia of a thin rod about its one end is __________ the mass moment of inertia of the same rod about its mid-point

The length of a second's pendulum is

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

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

The motion of a wheel of a car is

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