Unit IV FR KEYwhphysics.com/RotationalKinematicsTorqueFRPractice...Microsoft Word - Unit IV FR...
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Unit IV FR KEY 1) a) τ = -27 Nm b) I = 9 kgm 2 c) α = -3 rad/s 2 d) t = 1 s e) Δθ = -6 rev 2) a) diagram b) F T = 436 N c) F N,wall = 308. 3 N 3) a) diagram b) θ = 45° 4) a) because the top block (m/2) tends to produce a counter-clockwise torque about the axis of rotation (located in the middle), the left leg must provide greater force (and thus greater torque in the clockwise direction) to keep the NET torque at zero b) F = 5mg/8
Transcript of Unit IV FR KEYwhphysics.com/RotationalKinematicsTorqueFRPractice...Microsoft Word - Unit IV FR...
Unit IV FR KEY 1)
a) τ = -27 Nm b) I = 9 kgm2 c) α = -3 rad/s2 d) t = 1 s e) Δθ = -6 rev
2)
a) diagram b) FT = 436 N c) FN,wall = 308. 3 N
3)
a) diagram b) θ = 45°
4)
a) because the top block (m/2) tends to produce a counter-clockwise torque about the axis of rotation (located in the middle), the left leg must provide greater force (and thus greater torque in the clockwise direction) to keep the NET torque at zero
b) F = 5mg/8
