why does ball go up when we spin the ball when tied with rope
Answers
Explanation:
A swinging bowling ball illustrates a very important principle of physics: The Conservation of Energy. The total amount of energy an object has stays the same,
unless you do something to change it. To change the energy of something, you have to move it (for example, give it a push). The bowling ball starts with a certain amount of potential (stored) energy. It gets this energy because someone had to lift it up to hang it. Bowling balls are heavy and you have to do work to get it up in the air. Whenever we do work on something, we are giving it energy. When you let go of the ball, it swings downward like a pendulum. As it starts swinging, the energy changes from potential energy to kinetic, or moving, energy. The total amount of energy, moving plus stored, stays the same; it only changes form. When the ball swings back to where it started, the energy changes back to potential energy. Since the total energy has to stay constant, the kinetic energy of the ball must be zero and the ball must stop moving. It can’t hit you!
One is gravity which adds the downward component. The other one is horizontal which comes from the force spinning the ball. As the horizontal vector grows in magnitude, the angle of the string becomes closer to level because the horizontal force becomes stronger than the downward force.