Table of Contents
- 1 What happens to a stone when it is dropped through a hole drilled through the Centre of the earth?
- 2 What happens to the potential energy of a stone when it falls down from a roof?
- 3 When the stone is at the center of the earth it has?
- 4 What will be the value of G if mass of the earth becomes four times?
- 5 What will be the Ke of a body at rest?
- 6 When a ball hits the ground where does the energy go?
What happens to a stone when it is dropped through a hole drilled through the Centre of the earth?
We toss a stone into the hole. The stone is pulled down towards the center of the earth. It falls all the way to the middle of the earth once it reaches the middle, theres no more pull of gravity. It would go up a ways, then (due to the pull of gravity) fall back in the other direction, back towards the center.
What happens to the potential energy of a stone when it falls down from a roof?
Explanation. When an object falls freely towards the ground, its potential energy decreases, and kinetic energy increases; as the object touches the ground, all its potential energy becomes kinetic energy. As the object hits the hard ground, all its kinetic energy becomes heat energy and sound energy.
Does a falling stone have potential energy?
energy: Potential and Kinetic Energy If it falls, the force of gravity (which is equal to the stone’s weight; see gravitation) will act on it until it strikes the ground; the stone’s potential energy is equal to its weight times the distance it can fall.
Does a rock on the ground have potential energy?
NO!! The rock is not moving, so there is no change in its potential energy, hence no kinetic energy that can be harnessed and used for electricity!
When the stone is at the center of the earth it has?
Since the acceleration due to gravity is zero at the centre of the earth, the stone will have zero potential energy.
What will be the value of G if mass of the earth becomes four times?
So, if the mass alone is increased by four times (4M) the value of ‘g’ will become 4GM/r^2.
What type of energy does a stone have when it hits the ground?
Gravitational potential energy is due to the position of an object above Earth’s surface. The object has the potential to fall due to gravity.
What energy changes take place in a stone that falls from a cliff?
How does the energy of the stone change as it falls from the top of the cliff to the ground below? Kinetic Energy of the stone transforms to gravitational potential energy. Kinetic energy of the stone is dissipated as heat.
What will be the Ke of a body at rest?
Answer: The simplest answer is that a body at rest has zero kinetic energy.
When a ball hits the ground where does the energy go?
As the ball falls towards the ground, its potential energy is transformed into kinetic energy, which will continue increasing as it gains momentum, until it finally collides with a surface.
What kind of energy does a rock have sitting on the ground?
potential energy
When the rock starts rolling down the hill it has kinetic energy. When the rock gets to the bottom of the hill and stops, it is no longer in motion therefore it no longer has kinetic energy, the energy has been converted back into potential energy. NOT moving. Rock SITTING at the top of a hill.
Can an object have potential energy if it is on the ground?
The potential energy is always referred to some arbitrary energy level. So an object on the ground has potential energy if you can transform this energy into mechanical work making it fall through a hole, for instance.