Answer:
1470kgm²
Explanation:
The formula for expressing the moment of inertial is expressed as;
I = 1/3mr²
m is the mass of the body
r is the radius
Since there are three rotor blades, the moment of inertia will be;
I = 3(1/3mr²)
I = mr²
Given
m = 120kg
r = 3.50m
Required
Moment of inertia
Substitute the given values and get I
I = 120(3.50)²
I = 120(12.25)
I = 1470kgm²
Hence the moment of inertial of the three rotor blades about the axis of rotation is 1470kgm²
Answer:
t = 1.48 s
Explanation:
As we know that length of the Boeing plane is

width of the intersection is given as

now we know that deceleration of the plane is given as

Also the final speed of the plane while it clears the intersection is given as

now we have


also we know that


now we have

by solving above equation we have

Answer:
vol = 46,566 cm³
Explanation:
calcular el volumen de un cubo 36 cm
find: volume
let side of a cube = 36 cm
vol = side ³
vol = 36 ³
vol = 46,566 cm³
Answer:
Height will be equal to 0.4489 m
Explanation:
We have given mass of the toy m = 0.50 kg
Initial kinetic energy K = 2.2 J
We have to fond the height of the hill over which car roast
When car will roast the hill its kinetic energy will be converted into potential energy and at maximum height all kinetic energy will be converted into potential energy
So at maximum height 
Acceleration due to gravity 
So 0.50×9.8×h = 2.2
h = 0.4489 m
Gravity is pulling the book towards the center of the earth, and the rebounding effect of the table cancelling out gravity allowing for the book to sit at rest.