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static equilibrium problems

M m n m m n kg kg ms ms m m n p12 find

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Unformatted text preview: m m " $ N " kg # kg m/s m/s m !m N P12. Find the tension in the two wires supporting the traffic light shown in Fig. 9-46. Solution: % % % & 2 & cos "'° sin "'° & cos "° sin "° cos "'° cos "° sin "'° 8 3 cos "'° cos "° sin "° N N P18. Approximately what magnitude force, F , must the extensor muscle in the upper arm exert on the lower arm to hold a 7-3 kg shot put. Assume the lower arm has a mass of 2.8 kg and its CG is 12 cm from the elbow-joint pivot. Solution: ()* + m N P20. Calculate the force required of the "deltoid" muscle, F , to hold up the outstretched arm shown in Fig. 12-64. The total mass of the arm is 3.3 kg. Calculate the magnit...
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