A bird sits on a uniform rod suspended from vertical wires P and Q. i
x !
'
v
P a
1
not to scale
15.0 cm
2W
The rod has a weight J’ and is 15.0 & long.
The weight of the bird is 2’ and acts at a distance x from P.
What is the value of x when the tension in P is half the tension in Q?
[1 mark]
A 7.50 cm [=]
B 10.0cm [e]
Cc 13cm fe]
D 15.0cm [e]
!

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

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