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How do you find work done in maths?

Important Time and Work Formula Work Done = Time Taken × Rate of Work. Rate of Work = 1 / Time Taken. Time Taken = 1 / Rate of Work. If a piece of work is done in x number of days, then the work done in one day = 1/x.

What is its potential energy at its maximum height?

At an object’s maximum height, kinetic energy is zero/ maximum while the potential energy is zero/ maximum.

How Does height affect potential energy?

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

Is Ke to PE?

Now we can say that PE1=KE2. The energy has literally been converted from potential energy to kinetic energy. Note that the total energy at point 1 is equal to the energy at point 2, the energy has changed forms, but was not created or destroyed.

What is PE and KE in physics?

Summary. Energy is the ability to do work. Potential Energy (PE) is stored energy due to position or state. PE due to gravity = m g h. Kinetic Energy (KE) is energy of motion.

What happens to Ke as PE decreases?

As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy. Another important concept is work.

What happens to the PE when its KE is at its maximum?

At the top of its arc, PE is at its maximum. The whole cycle reverses itself on the way down. As you can see, the loss in KE is a gain in PE. Energy is not lost but conserved.

How does speed and position affect energy?

Explanation: This equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four. For a threefold increase in speed, the kinetic energy will increase by a factor of nine.

What is the kinetic energy of a body?

In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

How does the kinetic energy of a moving body depends on its speed and mass?

The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity. This means that an object with twice the mass and equal speed will have twice the kinetic energy while an object with equal mass and twice the speed will have quadruple the kinetic energy.

How much will the kinetic energy of a body increase if its speed is doubled?

1 Answer. Kinetic energy of a body depends on its mass and its speed. Hence, ,kinetic energy will become 4 times the original kinetic energy if the speed is doubled.