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2 questions for Statics class.. can someone help? (if you can handle it)?

A rope is tied to the top of a 10 m flagpole, the rope is tensioned to 120 N, then tied to straight stick in ground 20m from bottom of pole. The ground is level. Find the vertical and horizontal component of force applied at the top of the flagpole.

ALSO

The howv roof truss shown is subjected to wind loads as shown. Wind loads are perpendicular to inclined cords. Resolve each force into vertical and horizontal components.

The wind loads are 2, 4, 2 kilo lbs. And its 12 in. tall and 48 in. across.

2007-01-30 17:44:07 · 2 answers · asked by Anonymous in Science & Mathematics Mathematics

2 answers

ok, the rope is sqrt(20*20 + 10*10) meters long. that's about 22.36.

similar triangles: 120N/force = 22.36/20, so force = (120N/22.36)*20 = 107N

without the diagram, I can't figure out your ALSO.

2007-01-30 17:57:33 · answer #1 · answered by sspade30 5 · 0 0

The angle, θ between the rope and the pole is
θ = arctan(2/1)
θ ≈ 63.435
Fx = 120sin63.435 = 107.33 N
Fy = 120cos63.435 = 53.666 N

...can't visualize your 2nd problem...

2007-01-31 02:41:13 · answer #2 · answered by Helmut 7 · 0 0

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