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calculating torque on a wheel physics question?
Calculate the net torque on a wheel in the figure below about the axle through O if a= 11.4cm and b = 21.9cm.
Assume that F1 = 10.7N, F2 = 8.52N,
F3 = 12.4N and θ = 27.4°.
if someone could show me how to go through the steps I'd appreciate it alot! ive gotten lost in them.
if you could show with numericals thatd be awesome :P
1 Answer
- civil_av8rLv 73 years agoFavorite Answer
F1 and f2 are perpendicular to the lever arms
T1 = F1*rb= 10.7 N * .219 m = 2.34 N*m
T2 = F2*rb= 8.52 N * .219 m = 1.87 N*m
The picture is a bit blurry, but F3 also looks perpendicular to the lever arm... It looks like it is tangent to the radius....
T3 = F3*ra= 12.4 N * .114 m = 1.41 N*m
Now, torque is a vector, so direction is important for the sign convention. F1 and F2 produce clockwise torque about the center. F3 produces counterclockwise torque.
Torque_net = T1 + T2 - T3 = 2.80 N*m in the clockwise direction
Thats what I got.
