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2 https://session.masteringphysics.com/myct/itemView?assignmentProblemID-56314391 Physics 2001 Fall 2015 HMWK #10 Problem 10.03 Signed in as Randi ProvostHelp Close Resources « previous |1 of 7 next » Problem 10.03 Part A Three forces are applied to a wheel of radius 0.350 m, as shown in the figure (Figure 1). One force is perpendicular to the rim, one is tangent to it, and the other one makes a 40.0° angle with the radius. Assume that F1 = 11.7N, 2 15.4N, and F3 8.557 What is the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center? Indicate the direction of the net torque by letting counterclockwise torques be positive Express your answer in newton meters to three significant figures 0.120 N·m Submit My Answers Give Up Incorrect; Try Again | Figure 1 of 1 de Feedback Continue 40,02 F.

Explanation / Answer

F1 is directly towards centre so it makes 0 deg angle with radius vector and F2 makes 40 deg
angle and F3 makes 90 deg angle.

torque = r x F = rFsin@

torque = (r F1 sin0 ) - (r x F2 x sin40) + (r x F3 x sin90)

= 0 - (0.350 x 15.4 x sin40) + (0.350 x 8.55 x 1)

= 0.472 N m

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