A 2.00kg block hangs from a rubber cord, being supported so that the cord is not stretched.

The unstretched length of the cord is 0.500m and it's mass is 5.00g.The "spring constant" for the cord is 100N/m. Block is released and stops at lowest point.

a) determine the tension in cord when block is at lowest point.

I'm not sure but I do know that

Sum F= T-mg= 0 at lowest point.

but is the T= mg and that's it?

b) what is length of cord in stretched position?

I think but I'm not sure that I can find it by using

v= rad(T/mu)= rad(mgL/mblock)

However I don't think I can use this since I don't have v or L.

c) find speed of transversal wave in cord if block is at lowest position.

what I thought transverse speed was was from the equation:

vy= -omega*A cos(kx-omega*t) but I don't think I can use k that was given since It's not the same and I don't think I have omega either so how would I find transversal wave speed?

Thanks alot

The unstretched length of the cord is 0.500m and it's mass is 5.00g.The "spring constant" for the cord is 100N/m. Block is released and stops at lowest point.

a) determine the tension in cord when block is at lowest point.

I'm not sure but I do know that

Sum F= T-mg= 0 at lowest point.

but is the T= mg and that's it?

b) what is length of cord in stretched position?

I think but I'm not sure that I can find it by using

v= rad(T/mu)= rad(mgL/mblock)

However I don't think I can use this since I don't have v or L.

c) find speed of transversal wave in cord if block is at lowest position.

what I thought transverse speed was was from the equation:

vy= -omega*A cos(kx-omega*t) but I don't think I can use k that was given since It's not the same and I don't think I have omega either so how would I find transversal wave speed?

Thanks alot

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