Circular Motion and Relativity

Speed, velocity, centripetal acceleration. what is constant throughout ciruclar motion and what is changing and why?

• speed stays constant through out circular motion

• magnitude of accelreation stays constant

• direction of acceleration is constantly changing

• therefore, velocity is constantly changing

• direction of acceleration whilke not constant, is constantly acting towards the centre of the circle

Acceleration can be calculated through vector subtraction

What law explains the need for a net force in circular motion?

Newton’s Second Law (F = ma), because it states that an object accelerates in the direction of the net force. In circular motion, this net force causes the object to continuously change direction, keeping it in a curved path.

In which direction does an object accelerate during circular motion?

Toward the center of the circle (centripetal acceleration).

What happens if the net force acting on an object in circular motion is removed?

it moves off in a straight line, tangent to the circle.

draw a motion diagram for uniuform circular motion and include net force. only need to draw out thrree points.