Question

7:24 PM Wed Nov 20 PRACTICE IT Use the worked example above to help you solve this problem. A uniform horizontal beam 5.00 m long and weighting 2.97 x 10N is attached to a wall by a pin connection that allows the beam to rotate. Its far end is supported by a cable that makes an angle of 53.0 with the horizontal (Figure (a)). If a person weighing 6.09 x 10° N stands 1.60 m from the wall, find the magnitude of the tension in the cable and the force Rexerted by the wall on the beam. RN EXERCISE HINTS: GETTING STARTED | IM STUCK! A person with mass 55.0 kg stands 2.15 m away from the wall on ax = 5.85 m be shown in the figure below. The mass of the beam is 40.0 kg. Find the hinge force components and tension in the wire. (Indicate the direction with the sign of your answer.) T- R, Need Help? Read T alk to a Tutor

Answer 1

exercise

considering moment about hinge

55* 9.8*2.15 + 40* 9.8* 5.85 / 2 = T sin 30 * 5.85

T = 788.19 N

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forces along horizontal

Rx = T cos 30 = 682.6 N

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forces along vertical

Ry = (55 + 40)* 9.8 - 788.19 sin 30

Ry = 536.906 N

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