Apropeller is modeled as five identical uniform rods extending radially from its axis. the length and mass of each rod are 0.715 m0.715 m and 2.51 kg2.51 kg , respectively. when the propellor rotates at 527 rpm527 rpm (revolutions per minute), what is its rotational kinetic energy?

3260.33 J

Explanation:

 = number of rods = 5

 = length of each rod = 0.715 m

 = mass of rod = 2.51 kg

 = total moment of inertia

Total moment of inertia is given as

= 2.14 kgm²

 = angular speed = 527 rpm = 55.2 rad/s

Rotational kinetic energy is given as

E = (0.5)  ( )²

E = (0.5) (2.14) (55.2)²

E = 3260.33 J

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

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