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Unformatted text preview: F net = ma [ ] , Forces ∑ = ma [ ] , F 1 on 2 = − F 2 on 1 [ ] , ∠ dist = r θ [ ] , ω = v T r , α = a T r I = mr 2 [ ] , τ = l ⋅ f [ ] , τ = rF sin θ [ ] , F c = mv 2 r , a c = v 2 r , p = m v [ ] , L = I ω = rp sin θ [ ] Rubric Code: Note the figure on the right showing a barber shop sign weighing 100N. From the sign hangs a barber-shop-pole weighing 50N. The sign is anchored into the wall on one side, and suspended by a wire at an angle of 30 o on the other. The sign is 2m long. We will find the tension in the wire T. a) Draw all the forces on the sign . Be sure to draw the forces at the points where they act. List the forces below and give magnitudes for the ones you know. Fall 2010 7B Quiz 8 – Rotational Motion Student ID:________________ Name:________________ , ________________ |______| (last) (first) DL Sec# c) Write equations for the torques due to each force (Think about where to choose your pivot – a...
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- Winter '10
- Force, Sin, Sign, minor error