The toy on a spring illustrated energy conversion among what different forms? a. gravitational potential energy, kinetic energy, and elastic potential energy b. gravitational potential energy, kinetic energy, and thermal energy c. kinetic energy, elastic potential energy, and thermal energy d. kinetic energy and elastic potential energy e. gravitational potential energy and thermal energy

The correct answer is:

between kinetic energy and elastic potential energy.

In fact, the total mechanical energy of the system is given by:

where

is the elastic potential energy, with k being the spring constant and x being the compression/stretching of the spring, and

is the kinetic energy, with m being the mass of the toy and v being its speed.

When the spring is compressed, the elastic potential energy U is maximum (since x is maximum), and the kinetic energy is zero(since the speed is zero). As the spring is released, the elastic potential energy U decreases (because x decreases), and the kinetic energy K increases (since the speed of the toy v increases).

Explanation:

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d.Kinetic energy and elastic potential energy

Explanation:

As we know that the toy is pressed against the spring initially

so the energy is stored inside the spring

this energy is given by

here we have

k = spring constant

x = compression in spring

when this toy is released then it is projected up by the spring with certain speed

so here we can say that energy is converted into kinetic energy

so here we can say

so here we will have

d.Kinetic energy and elastic potential energy

f=ma newton's second law 7x8=56n

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