A particle is located on the x axis at x = 2.0 m from the origin.A force of 25 N, directed 30° above the x axis in the x-y plane, acts on the particle.What is the torque about the origin on the particle?
A)50 N∙m, in the positive z direction
B)25 N∙m, in the positive z direction
C)50 N∙m, in the negative z direction
D)25 N∙m, in the negative z direction
E)There is no torque about the origin.

Question

Quizplus · Accepted Answer

The torque is calculated as τ = rFsinθ. Here, r = 2.0 m, F = 25 N, and θ = 30°. Thus, τ = 2.0 * 25 * sin(30°) = 25 N∙m. The torque is in the positive z direction due to the right-hand rule.

A Particle Is Located on the X Axis at X