What is least gravitational potential energy?

What is least gravitational potential energy?

When the planet is closest to the Sun, speed v and kinetic energy are the highest, and gravitational potential energy is the lowest. When the planet moves farther away, the speed and kinetic energy decrease, and the gravitational potential energy increases.

What is SI unit of gravitational potential?

The gravitational potential at a point is nothing but the potential energy associated with a unit mass due to its position/configuration in the gravitational field of another body. SI unit of work (W) is Joule(J) and of mass is kilogram (Kg). Therefore, the SI unit of gravitational potential is JKg=JKg−1 .

What is gravitational potential energy derive its formula?

Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height to which it is lifted. PE = kg x 9.8 m/s2 x m = joules. PE = lbs x ft = ft lb.

What is the zero of potential energy?

There are some well-accepted choices of initial potential energy. For example, the lowest height in a problem is usually defined as zero potential energy, or if an object is in space, the farthest point away from the system is often defined as zero potential energy.

What does it mean when potential energy is negative?

Now, we can define the electric potential energy of a system of charges or charge distributions. Therefore, a system consisting of a negative and a positive point-like charge has a negative potential energy. A negative potential energy means that work must be done against the electric field in moving the charges apart!

What type of energy is stored in our bodies?

In the body, thermal energy helps us to maintain a constant body temperature, mechanical energy helps us to move, and electrical energy sends nerve impulses and fires signals to and from our brains. Energy is stored in foods and in the body as chemical energy.