Question

What is the tangential velocity of a point on a blade midway between the tip and the axis.

Answer 1

Answer:

ok I knew the answer

Explanation:

Radius, r=2 m

(a) Angular velocity, ω=1800 rev/min

⟹ω=

60

1800

rev/s

⟹ω=30 rev/s

⟹ω=30×2π rad/s

⟹ω=60π rad/s

Tangential velocity, V=rω

⟹V=2×60π

⟹V=120π

⟹V=377 m/s

(b) Tangential velocity at a point on blade midway between tip and axis:

V=

2

r

×ω

⟹V=1×60π

⟹V=60π

⟹V=188.49 m/s

I hope you understand my answer