Physics question

A stream of water travelling at a velocity, vw = 28 m s-1 hits a stationary turbine paddle and is contained within the paddle. The paddle then rotates and rises by a vertical height, h. Calculate the angle of rotation (q), given the mass of the water, m = 2.5 kg.

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Original post by zxcvbnm909

A stream of water travelling at a velocity, vw = 28 m s-1 hits a stationary turbine paddle and is contained within the paddle. The paddle then rotates and rises by a vertical height, h. Calculate the angle of rotation (q), given the mass of the water, m = 2.5 kg.

What have you tried?

Reply 2

zxcvbnm909

OP

11

Original post by Eimmanuel

What have you tried?

I considered how it is effectively a collision between the water and the paddle so due to the conservation of momentum:
28(2.5) + 0(8) = (2.5+8)v
v = 6.67 ms-1

I also thought about using the change in kinetic energy or work done in some way but i am not sure.

Original post by zxcvbnm909

I considered how it is effectively a collision between the water and the paddle so due to the conservation of momentum:
28(2.5) + 0(8) = (2.5+8)v
v = 6.67 ms-1

I also thought about using the change in kinetic energy or work done in some way but i am not sure.