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phys doubt

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astarmathsandphysics:
Can you upload the file again it may be corrupted

Phosu:
i hope it works this time

astarmathsandphysics:
Thanks

astarmathsandphysics:
8)only A momentum and Kinetic energy both conserved

before
momentum2mu-mu=mu
kinetic enery =1/2*2m*u^2 +1/2*m*y^2=3/2mu^2

after
momentum 2m*-u/3+m*5u.3=mu
kinetic energy 1/2*2m*(u/3)^2+1/2*m*(5u/3)^2=3/2mu^2

astarmathsandphysics:
B resolve if the tension is not vertical it must increse so the vertial component remains constant.
If the angle to the vertical increases the tension must increase further

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