# Classical physics (phase diagram

• dirac1902
In summary, at time t=0 the ball is released and fell on the ground after hitting the ground. The ball rests there. The attempt at a solution shows that v=sqrt(2g(h-x)) and x=h.
dirac1902
A ball of mass m rests at times t less than 0, at height h above the ground. at time t=0 the ball is released and fell on the ground after hitting the ground, the ball rests there.

a) x represents distance from the ground, drive and expression for the phase diagram when the ball moving toward the ground. and draw it and find where v and x meet the axis's.
The attempt at a solution

1/2(mv^2)= mg(h-x)

v=sqrt(2g(h-x)) #

the graph will be a curve (square root) the start will be when x=h and then when it hits the ground will have max v so the position will be zero and v is max.

Thanks

Last edited:
dirac1902 said:
A ball of mass m rests at times t less than 0, at height h above the ground. at time t=0 the ball is released and fell on the ground after hitting the ground, the ball rests there.

a) x represents distance from the ground, drive and expression for the phase diagram when the ball moving toward the ground. and draw it and find where v and x meet the axis's.

The attempt at a solution

1/2(mv^2)= mg(h-x)

v=sqrt(2g(h-x)) #

the graph will be a curve (square root) the start will be when x=h and then when it hits the ground will have max v so the position will be zero and v is max.

Thanks

It all seems fine to me. The question asks you for the point at which the curve meets the two axes (plural of axis by the way), in other words it asks for the the x-intercept and v-intercept. So you might want to state more explicitly that:

- the x-intercept (when v = 0) occurs at x = h

- the v-intercept (when x = 0) occurs at y = √(2gh)

cepheid said:
It all seems fine to me. The question asks you for the point at which the curve meets the two axes (plural of axis by the way), in other words it asks for the the x-intercept and v-intercept. So you might want to state more explicitly that:

- the x-intercept (when v = 0) occurs at x = h

- the v-intercept (when x = 0) occurs at y = √(2gh)

but how the curve will be. I mean will it open up or down?

Last edited:

## 1. What is a phase diagram in classical physics?

A phase diagram in classical physics is a graphical representation of the various physical states of a substance (solid, liquid, and gas) at different temperatures and pressures. It shows the relationships between these states and the conditions under which they exist.

## 2. How is a phase diagram useful in understanding the behavior of matter?

A phase diagram can help us understand the behavior of matter by showing the changes in physical properties such as melting point, boiling point, and critical point under different conditions. It also helps in predicting the behavior of a substance when exposed to different temperatures and pressures.

## 3. What is the triple point in a phase diagram?

The triple point in a phase diagram is the point where all three phases (solid, liquid, and gas) of a substance coexist in equilibrium. At this point, the substance has a unique set of temperature and pressure values at which it can exist in all three phases simultaneously.

## 4. How does pressure affect the phase diagram of a substance?

Increasing the pressure on a substance can cause its phase diagram to shift, changing the conditions under which it exists in different physical states. For example, increasing the pressure can lower the melting point of a substance, causing it to change from a solid to a liquid at a lower temperature.

## 5. Can a phase diagram be used to predict the behavior of all substances?

No, a phase diagram is specific to each substance and cannot be used to predict the behavior of all substances. Different substances have different phase diagrams based on their unique physical properties and molecular structures.

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