Engineering Mechanics

The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be_________________?

Byadmin January 25, 2019August 16, 2021

The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be_________________?

A. r/2
B. 2r/3
C. r/A
D. 3r/2
E. 3r/A

Engineering Mechanics

If a number of forces act simultaneously on a particle, it is possible _____________________?

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
E. to replace them by a couple and a force

Read More If a number of forces act simultaneously on a particle, it is possible _____________________?
Engineering Mechanics | Mechanical Engineering

If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

Question: If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
[A].

g/2
[B].
g/3
[C].
g/4
[D].
none of these

Answer: Option D

Explanation:

No answer description available for this question.

Read More If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
Engineering Mechanics | Equilibrium Of A Particle

Determine the magnitude and direction of the resultant force FAB exerted along link AB by the tractive apparatus shown. The suspended mass is 10 kg. Neglect the size of the pulley at A.

Question: Determine the magnitude and direction of the resultant force FAB exerted along link AB by the tractive apparatus shown. The suspended mass is 10 kg. Neglect the size of the pulley at A.
[A].

FAB = 170.0 N, = 75.0°
[B].
FAB = 170.0 N, = 15.0°
[C].
FAB = 98.1 N, = 75.0°
[D].
FAB = 98.1 N, = 15.0°

Answer: Option D

Explanation:

No answer description available for this question.

Read More Determine the magnitude and direction of the resultant force FAB exerted along link AB by the tractive apparatus shown. The suspended mass is 10 kg. Neglect the size of the pulley at A.
Engineering Mechanics | Mechanical Engineering

According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

Question: According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
[A].

True
[B].
False

Answer: Option B

Explanation:

No answer description available for this question.

Read More According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
Engineering Mechanics | Mechanical Engineering

In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.

Question: In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
[A].

True
[B].
False

Answer: Option A

Explanation:

No answer description available for this question.

Read More In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
Engineering Mechanics

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?

A. density of metal can’t be determined
B. metal is twice as dense as water
C. metal will float in water
D. metal is twice as dense as unknown fluid
E. none of the above

Read More A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal_________________?