Apoint at the end of a propeller has a centripetal acceleration of 532.6 m/s^2.
if the velocity of the propeller at this point is 35 m/s how long is the propeller blade?
a. 2.1m
b. 2.5m
c. 2.3m
d. 1.9m

C. 2.3 m

Explanation:

Centripetal acceleration is:

a = v² / r

Given a = 532.6 m/s² and v = 35 m/s:

532.6 m/s² = (35 m/s)² / r

r = 2.3 m

r = 2.3 meters

Explanation:

Solution,

Given that,

Centripetal acceleration of the propeller,

Velocity of the propeller, v = 35 m/s

To find,

Length of the propeller blade.

Solution,

The centripetal acceleration is given by :

r is the radius of propeller

r = 2.3 meters

So, the length of the propeller is 2.3 merets.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .