Cracking the SAT Physics Subject Test

(Marvins-Underground-K-12) #1
question gave the lever arm already. (The given 60° angle was
irrelevant.) Thus, from τ = Fℓ, the torque is (0.40 m)(0.50 kg)(10
m/s^2 ) = 2.0 N • m.


  1. B The stick will remain at rest in the horizontal position if the torques about
    the suspension point are balanced.

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