Engineering Mechanics

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.

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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.

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

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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.

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.)

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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.

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

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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.