Question

76cm- 5cm- A balance has five identical keys suspended from it as shown. When the balance is released, what will happen? Explain. ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ ܘ 2. Cable h the horizontal CabLE 45. 2m A 60-kg beam is supported by a (frictionless) rod and a cable as shown. The beam makes an angle of 15° with the horizontal and the cable makes an angle of 45° with the horizontal. A 40- kg mass is suspended from the right end of the beam. Use the outline below to draw an extended free-body diagram for the beam. Label all of the forces. Then show the distance that would be used to calculate the torque on the beam about the rod due to the cable on the left. Label this distance with a d. 40 K 3. Six identical 2-meter long massless rods are supporting identical 12-Newton masses. In each case, a vertical force F is holding the rods and the masses at rest. The left end of each rod is held in place by a frictionless pin. The rods are marked at half-meter intervals. Rank the magnitude of the vertical force F applied to the rods for the six cases. Explain how you determined your ranking.

I only need help with question 2 & 3

Answer 1

Solution ? Tsinas K 3m - sh. 2m : ; most di . I Tosts . Goxg 400g d = 3 cosso F X2 = izxi TF56w) (B) 12x0.5 = EXZ=> F= 30t rel) 12X0.5 = FX2 =>=3" (o) . FX2 = 127.7.5 F = 9N) col Fx1= 12x0.5 .=)F=6N) (E) kxos = 12X1 = /F=24N) (F.) FxI= 12x2 => F= 200 ans. Scanned with CamScanner