# gravitation

### Escape velocity – Definition, Derivation of equation and Values

##### Gravitation

Escape velocity  From the term Escape Velocity itself we get an idea of its definition. It’s a velocity that helps to escape – isn’t it? But Escape from what and how? Should we use the term velocity or we should use the term speed? This is what we are going to discuss today in our

### Gravitation: Why does a stone fall towards the earth but the opposite is not observed?

##### Gravitation

Gravitation and a Falling Stone As said by this law of universal gravitation every object in this universe is attracting every other object towards it. This force of gravitational attraction between any two objects in the universe is inversely proportional to the square of the distance between the objects. This force is again directly proportional

### What will happen to a ball thrown vertically upwards?

##### Gravitation Motion

Motion of a ball thrown vertically upwards You must have seen someone throwing a ball vertically upwards or probably you have thrown it yourself. Yes, the ball goes up for a while and then stops and starts to come down and touches the ground with a bang if you can’t catch it. Let’s discuss the phases

### Free fall, Acceleration due to Gravity and Kinetic Energy

##### Force Gravitation Motion Work, Energy, Power

Weight of any object is a force applied on the object by earth’s gravitational pull towards the center of the earth. We know the equation of a force = mass * acceleration. i.e.      F=m*a…….(1) When we talk of weight force then the equation becomes like this: Weight(W)= mass * acceleration due to gravity