When r and F are perpendicular, θ = 90°. Whe r and F are parallel, θ = 0°.
τ1 = r•Fsinθ = (L/4)(2F)(sin 90) = (LF)/2
τ2 = r•Fsinθ = (L/2)(F)(sinθ2) = (LFsinθ2)/2 or (LF/2)sinθ2
Six forces, each of magnitude either F or 2F, are applied to a door as seen from above in Figure 6. Rank in order, from smallest to largest, the six torques τ1 to τ6 about the hinge.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Intro to Torque concept. You can view video lessons to learn Intro to Torque. Or if you need more Intro to Torque practice, you can also practice Intro to Torque practice problems.