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4 years ago

15

Can a moving object have gravitational energy?

1 answer:

Evgesh-ka [11]4 years ago

5 0

Answer:

It is worth noting that the higher the gravitational energy of an object moving downwards, the lower the kinetic energy, and the lower the kinetic energy of an object moving upwards, the higher its gravitational energy.

Gravitational potential energy is acquired by an object when it has been moved against a gravitational field. For example, an object raised above the surface of the Earth will gain energy, which is released if the object is allowed to fall back to the ground.

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Johnny stretches a spring 40 cm from its resting position. The spring’s constant of proportionality is 20 N/m. What is the sprin

sergiy2304 [10]

The spring potential energy is 1.6 J

Explanation:

The elastic potential energy of a spring is given by the equation:

$U = \frac{1}{2}kx^2$

where

U is the potential energy

k is the spring constant

x is the compression/stretching of the spring

For the spring in this problem, we have:

x = 40 cm = 0.40 m is the stretching

k = 20 N/m is the spring constant

Substituting into the equation, we can find the spring potential energy:

$U=\frac{1}{2}(20)(0.40)^2=1.6 J$

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