One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

Applied Mechanics and Graphic Statics
One end of an elastic string of natural length / and modulus X is kept fixed while to the other end is attached a particle of mass m which is hanging freely under gravity. The particle is pulled down vertically through a distance x, held at rest and then released. The motion is

a simple harmonic motion

a rectilinear motion with constant speed

a damped oscillatory motion

None of these

a simple harmonic motion

a rectilinear motion with constant speed

a damped oscillatory motion

None of these

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Applied Mechanics and Graphic Statics
The force acting on a point on the surface of a rigid body may be considered to act

On the periphery of the body

On any point on the line of action of the force

At the centre of gravity of the body

At any point on the surface normal to the line of action of the force

On the periphery of the body

On any point on the line of action of the force

At the centre of gravity of the body

At any point on the surface normal to the line of action of the force

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Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Zero work

Imaginary work

Virtual work

Negative work

Zero work

Imaginary work

Virtual work

Negative work

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Applied Mechanics and Graphic Statics
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

2n rpm

n rpm

n/2 rpm

n/4 rpm

2n rpm

n rpm

n/2 rpm

n/4 rpm

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Applied Mechanics and Graphic Statics
If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then i. a force is required to move the body upwards ii. a force is required to move the body downward iii. the body will not be in equilibrium The correct answer is

both (i) and (iii)

only (ii)

only (i)

both (i) and (ii)

both (i) and (iii)

only (ii)

only (i)

both (i) and (ii)

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Applied Mechanics and Graphic Statics
The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be

tan (α - β)/tan (α + β)

sin (α + β)/sin (α - β)

sin (α - β)/sin (α + β)

cos (α - β)/cos (α + β)

tan (α - β)/tan (α + β)

sin (α + β)/sin (α - β)

sin (α - β)/sin (α + β)

cos (α - β)/cos (α + β)

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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics The force acting on a point on the surface of a rigid body may be considered to act

Applied Mechanics and Graphic Statics If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Applied Mechanics and Graphic Statics A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

Applied Mechanics and Graphic Statics The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be

Applied Mechanics and Graphic Statics
The force acting on a point on the surface of a rigid body may be considered to act

Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Applied Mechanics and Graphic Statics
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

Applied Mechanics and Graphic Statics
The ratio of the ranges on the inclined plane with motion upward and with motion downward for a given velocity, angle of projection will be