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QUESTIONS (8 Marks)
1. Develop the notions of work and kinetic energy and show that it leads
t
work-energy theorem?
Ар 1.
A. 1) Work: The dot product of force and displacement is called work,
Formula: Work W = PS = PS cos 0
2) Kinetic energy: The energy possessed by a body due to its motion is called K
energy
Formula: Kinetic energy, Ke--my?
2
3) Work - energy theorem: The net work done on a body is equal to change in
energy
"w - my?
2 2
9) Proof: Let a body of mass 'm' is moving with an initial velocity u.
Let it be acted on by a constant force and attains a final velocity'v' after time
1
ty2
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