Exam 2 Key Equations

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8 Terms

1
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Uniform Circular Motion Related

Tcos θ = mg

Tsin θ = mv²/r

r = Lsinθ

2
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Two Wires/Tension Related

2Tsinθ = mg

T = mg/2sinθ

Th = Tcosθ

Tv = Tsinθ

3
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Work (Non-conservative force)

Wnc = ^KE + ^PE

KE = ½ mv²

PE = mgh

4
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Constant Speed Elevator

The vector arrows will be of equal length due to constant speed.

5
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Spring Constant

Fel = -kx

mgh = ½ kx²

x = sqrt (2mgh /k)

6
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7
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8
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