R:<span> </span><span>If they give you the net torque and the moment of inertia already, it's pretty easy.
torque = I * alpha, where I is moment of inertia, alpha is angular acceleration.
Thus, 0.098 / 0.000075 = 1306.666... rad / s^2
The angular acceleration remains constant, but the angular velocity at that point (if you want it) is 21.36 rad / s</span>
Answer:
B. twice as much kinetic energy
Explanation:
Lets take the mass of the first marble =2 m
the mass of the second marble = m
We know that velocity of particle does not depends on their mass that is the velocity of both mass will be same after dropping from the roof.
We know that kinetic energy of a mass is given as
![KE=\dfrac{1}{2}Mv^2](https://tex.z-dn.net/?f=KE%3D%5Cdfrac%7B1%7D%7B2%7DMv%5E2)
Kinetic energy for heavier mass
![KE=\dfrac{1}{2}\times 2m\times V^2](https://tex.z-dn.net/?f=KE%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%202m%5Ctimes%20V%5E2)
Kinetic energy for light mass
![KE'=\dfrac{1}{2}\times m\times V^2](https://tex.z-dn.net/?f=KE%27%3D%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%20m%5Ctimes%20V%5E2)
KE=2 KE '
Form above two equation we can say that ,the kinetic energy for the heavier mass is twice the lighter mass.
Therefore the answer will be B.
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Yes this is true this causes day and night