Physics: 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?

Apropeller is modeled as five identical uniform - id1556716, tanyiawilliams7490

Jasten

15.03.2022

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

$I = \frac{nmL^{2}}{3}$

$I = \frac{(5)(2.51)(0.715)^{2}}{3}$

= 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

0,0(0 оценок)