In the figure, the dashed line expanding from the force vector is referred to as the heat of activity of F_vec. The perpendicular distance r_m from the pivot allude p to the heat of activity is called the moment arm that the force.

You are watching: What is the length, rm, of the moment arm of the force f⃗ about point p?

a.) What is the length, r_m, the the moment arm the the pressure F_vec about point p? to express in r and theta

b.) find the torque about p due to F_vec. Her answer must correctly express both the magnitude and also sign the torque.

Express in terms of r_m and also F or in regards to r, theta, and F.

The concerns are with this picture:

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answeredAug 12by kirankingselectedSep 6by sudheer

Best answer

a) through inspection, r_m = r*sinΘ

b) Q = -F*r_m = -F*r*sinΘ

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