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Determine the tension in the supporting cables BC and BD and the components of reaction at the ball-and-socket joint A of the boom. The boom supports a drum having a weight of 200 lb. at F. Points C and D lie in the x—y plane.

Engineering Mechanics, Equilibrium Of A Rigid Body /
Question: Determine the tension in the supporting cables BC and BD and the components of reaction at the ball-and-socket joint A of the boom. The boom supports a drum having a weight of 200 lb. at F. Points C and D lie in the x—y plane.
[A].

Ax = 0, Ay = 150 lb, Az = 562 lb, TBC = 300 lb, TBD = 212 lb

[B].

Ax = 0, Ay = 150 lb, Az = 456 lb, TBC = 150 lb, TBD = 212 lb

[C].

Ax = 0, Ay = 267 lb, Az = 843 lb, TBC = 533 lb, TBD = lb

[D].

Ax = 0, Ay = 150 lb, Az = 500 lb, TBC = 212 lb, TBD = 212 lb

Answer: Option A

Explanation:

No answer description available for this question.

Determine the tension in the supporting cables BC and BD and the components of reaction at the ball-and-socket joint A of the boom. The boom supports a drum having a weight of 200 lb. at F. Points C and D lie in the x—y plane. Read More »

Engineering Mechanics, Equilibrium Of A Rigid Body

In order to completely specify angular displacement by a vector, it must fix

Engineering Mechanics, Mechanical Engineering /
Question: In order to completely specify angular displacement by a vector, it must fix
[A].

direction of the axis of rotation

[B].

magnitude of angular displacement

[C].

sense of angular displacement

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

In order to completely specify angular displacement by a vector, it must fix Read More »

Engineering Mechanics, Mechanical Engineering

The angular velocity (in rad / s) of a body rotating at N revolutions per minute is

Engineering Mechanics, Mechanical Engineering /
Question: The angular velocity (in rad / s) of a body rotating at N revolutions per minute is
[A].

πN/60

[B].

πN/180

[C].

2πN/60

[D].

2πN/180

Answer: Option C

Explanation:

No answer description available for this question.

The angular velocity (in rad / s) of a body rotating at N revolutions per minute is Read More »

Engineering Mechanics, Mechanical Engineering

If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that

Engineering Mechanics, Mechanical Engineering /
Question: If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that
[A].

tan θ = ∑H/∑V

[B].

tan θ = ∑V/∑H

[C].

tan θ = ∑Vx∑H

[D].

Answer: Option B

Explanation:

No answer description available for this question.

If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that Read More »

Engineering Mechanics, Mechanical Engineering

The cartesian equation of trajectory is(where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

Engineering Mechanics, Mechanical Engineering /
Question: The cartesian equation of trajectory is(where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
[A].

[B].

[C].

[D].

Answer: Option C

Explanation:

No answer description available for this question.

The cartesian equation of trajectory is(where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.) Read More »

Engineering Mechanics, Mechanical Engineering

Which of the following statement is correct in connection with projectiles?

Engineering Mechanics, Mechanical Engineering /
Question: Which of the following statement is correct in connection with projectiles?
[A].

A path, traced by a projectile in the space, is known as trajectory.

[B].

The velocity with which a projectile is projected, is known as the velocity of projection.

[C].

The angle, with the horizontal, at which a projectile is projected is known as angle of projection.

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Which of the following statement is correct in connection with projectiles? Read More »

Engineering Mechanics, Mechanical Engineering

In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will

Engineering Mechanics, Mechanical Engineering /
Question: In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will
[A].

increase

[B].

decrease

[C].

remain the same

Answer: Option B

Explanation:

No answer description available for this question.

In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will Read More »

Engineering Mechanics, Mechanical Engineering

A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

Engineering Mechanics, Mechanical Engineering /
Question: A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is
[A].

m1/m2

[B].

m1.g sin α

[C].

m1.m2/m1+m2

[D].

Answer: Option D

Explanation:

No answer description available for this question.

A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is Read More »

Engineering Mechanics, Mechanical Engineering

A block ot mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will __________ with the increase in coefficient of friction.

Engineering Mechanics, Mechanical Engineering /
Question: A block ot mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will __________ with the increase in coefficient of friction.
[A].

increase

[B].

decrease

[C].

not be effected

Answer: Option A

Explanation:

No answer description available for this question.

A block ot mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will __________ with the increase in coefficient of friction. Read More »

Engineering Mechanics, Mechanical Engineering

If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be

Engineering Mechanics, Mechanical Engineering /
Question: If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be
[A].

same

[B].

half

[C].

double

Answer: Option B

Explanation:

No answer description available for this question.

If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be Read More »

Engineering Mechanics, Mechanical Engineering