Question

A 1,300–N uniform boom at

*ϕ* = 60.0°

to the horizontal is supported by a cable at an angle

*θ* = 30.0°

to the horizontal as shown in the figure below. The boom is pivoted at the bottom, and an object of weight

* w* = 1,950 N

hangs from its top.

A boom of length *l* with its bottom end on a pivot is
shown. The boom points up and to the right and makes an angle
*ϕ* with the horizontal. An object of weight *w*hangs
from the right end of the boom. A cable extends from the wall on
the left and connects to the boom at a distance of 3⁄4
*l*from the pivot. The cord makes an angle *θ* with
the horizontal.

(a) Find the tension in the support cable.

kN

(b) Find the components of the reaction force exerted by the pivot
on the boom. (Assume the positive *x*-direction is to the
right and the positive *y*-direction is upward. Include the
sign of the value in your answer.)

horizontal component=

vertical component=

Answer #1

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1:
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.
×10
J
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J
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??...

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