initial angular speed is given by 33.3 rpm


final angular speed is given by 78 rpm


now by using kinematics we will have



Stanley Milgram, a psychologist at Yale University, conducted anexperiment<span> focusing on the conflict between obedience to authority and personal conscience. He examined justifications for acts of genocide offered by those accused at the World War II Nuremberg War Criminal trials.</span>
To develop this problem it is necessary to apply the concepts related to Work and energy conservation.
By definition we know that the work done by a particle is subject to the force and distance traveled. That is to say,

Where,
F= Force
d = Distance
On the other hand we know that the potential energy of a body is given based on height and weight, that is

The total work done would be given by the conservation and sum of these energies, that is to say

PART A) Applying the work formula,

PART B) Applying the height equation and considering that there is an angle in the distance of 25 degrees and the component we are interested in is the vertical, then



The net work would then be given by



Therefore the net work done by these 2 forces on the cannonball while it is in the cannon barrel is 3355J
1st class lever the Fulcrum is between the load and the effort
2nd class lever the load is between the effort and the fulcrum
3rd class lever the effort is between the fulcrum and the load.
1)1st class lever
2)3rd class lever
3)2nd class lever
part2
The human hands act as a fulcrum in cases where a hum is holding something in case of a person sweeping
1)1st class lever
2)2nd class lever
3)3rdclass lever.
4)1st class
5)3rd class
6)1st class
7)2nd class
8)3rd class
9)3rd class