Answer: 9496200 joules
Explanation:
Gravitational potential energy, GPE is the energy possessed by the moving plane since it moves against gravity.
Thus, GPE = Mass m x Acceleration due to gravity g x Height h
Since Mass = 1900kg
g = 9.8m/s^2
h = 510 metres (units of height is metres)
Thus, GPE = 1900kg x 9.8m/s^2 x 510m
GPE = 9496200 joules
Thus, the gravitational potential energy of the airplane is 9496200 joules
Artificial gravity is created by rotating the cylinder
So here we can say that the acceleration is due to centripetal acceleration
So here we know that the formula of centripetal acceleration is given by
so here we know that
now we will plug in all values
So above is the radius of the cylinder
Now to find the diameter
so its diameter is 194.8 m
Answer:
A force unit is defined as the product of a mass unit and a unit of acceleration.
Answer:
Option 5. 1 and 3
Solution:
The only forces acting on the tennis ball after it has left contact with the racquet and the instant before it touches the ground are the force of gravity in the downward direction and the force by the air exerted on the ball.
The ball after it left follows the path of trajectory and as it moves forward in the horizontal direction the force of the air acts on it.
In the whole projectile motion of the ball, the acceleration due to gravity acts on the ball thus the force of gravity acts on the ball in the downward direction before it hits the ground.
