Question

An airplane propeller is 2.18 m in length (from tip to tip) and has a mass of 102 kg. When the airplane's engine is first started, it applies a constant net torque of 1950 N⋅m to the propeller, which starts from rest.What is the angular acceleration of the propeller? Treat the propeller as a slender rod.

Answer 1

Step-by-step explanation:

Moment of inertia of propeller

= (1/12) m l²

=( 1 / 12) x 102 x 2.18²

= 40.4 kgm²

torque = 1950 N-m

angular acceleration

= torque / moment of inertia

= 1950 / 40.4

= 48.26 rad / s²