Question

Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, takinga = 5.00 cm and b = 17.0 cm. (Indicate the direction with the sign of your answer. Assume that the positive direction is counterclockwise.)

Answer 1

Answer 2

Answer #1 is incorrect because the 30 degrees is actually irrelevant in this case when solving. The mistake above is including the cos30 degrees, THIS WOULD BE INACCURATE!! So instead, follow the same steps listed above except DO NOT multiply the 12 with the (cos30), instead multiply like this 12*0.0500m. Whatever you get here you can add it to the other values of -(10*0.17)-(9*0.17).