For the arrangement at the right: a) Which tensional force(s) would create count

Question

For the arrangement at the right:
a) Which tensional force(s) would create
counter-clockwise torques?

b) Which tensional force(s) would create clockwise torques?


c) If T1 = 50 N, what is the torque for this tensional force? Nm.
d) If T2 = 150 N, what is the torque for this tensional force? Nm.
e) What would T3 have to be for this system to be in rotational equilibrium? T3 =
f) Is the system in translational equilibrium? Explain how you know.

For the arrangement at the right: a) Which tensional force(s) would create counter-clockwise torques? b) Which tensional force(s) would create clockwise torques? c) If T1 = 50 N, what is the torque for this tensional force? Nm. d) If T2 = 150 N, what is the torque for this tensional force? Nm. e) What would T3 have to be for this system to be in rotational equilibrium? T3 = f) Is the system in translational equilibrium? Explain how you know.

Explanation / Answer

a) only T3 would spin it CCW

b) T1 and T2 would spin it CW

c) torque = r F = 50*0.4 = 20 Nm

d) torque = r F = .4*150 = 60 nM

e) so net torque in CW = 20 + 60

so torque 3 = 80 = 0.8*T3

T3 = 80/0.8 = 100 N

f) sum forces in the y = T1 + T3 - T2 = 50 + 100 - 150 = 0

so yes it is

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