Give proof to show: Start with to prove l vector = r vector times D vector...

Question

Question

Give proof to show:

Start with xp X and Iw and Tw to prove Y P

science physics

Answer 1

Answer #1

part 1:

l=r * p

==>dl/dt= r * (dp/dt)

time rate of change in momentum=force

hence dl/dt=r*F

but r*F=torque

hence proved.

part 2:

l=I*w

==>dl/dt=I*(dw/dt)

but dw/dt=time rate of change of angular velocity=angular acceleration

hence

dl/dt=moment of inertia*angular acceleration=torque applied

hence proved.

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Answer 2

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