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Mechanics 2 Key Notes (Exam Date: Friday 27th January 20110 AM)

1. Kinematics






2. Centre of Mass

Uniform sector


Uniform arc


3. Work, Energy & Power

Kinetic Energy KE = 0.5mv2
Potential Energy PE =mgh

Work done = Force x Distance (in the case if lifting, height, h)
(Inclines forces…

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4. Collision

Impulse: I = mv ­ mu
Conservation of momentum: m1u1 + m2u2 = m1v1 + m2v2

Newton's Law of Restitution: 0 < e < 1
e=


Loss of KE due to impact:
(0.5m1u12 + 0.5m2u22) ­ (0.5m1v12 + 0.5m2v22)





5. Statics of Rigid Bodies

"Taking moments about a…

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