Amass vibrates back and forth from the free end of an ideal spring of spring constant 20.0 n/m with an amplitude of 0.250 m. what is the maximum kinetic energy of this vibrating mass? what is its velocity when it is 0.125 m from its maximum displacement?

The kinetic energy of this vibrating mass and the velocity are 0.625 J and

Explanation:

Given that,

Spring constant = 20.0 N/m

Amplitude = 0.250 m

Displacement = 0.125 m

At equilibrium position,

The kinetic energy is maximum and potential energy is zero.

We need to calculate the kinetic energy

Using formula of maximum energy

Put the value into the formula

We need to calculate the velocity

Using formula of velocity

We know that.

The spring constant

Put the value of in to the formula

Put the value into the formula

Hence, The kinetic energy of this vibrating mass and the velocity are 0.625 J and

d

explanation:

i think the answer is d. but im not sure!