Physics Ch 09 Circular Motion and Gravitation

Front

What is circular motion?

Back

Circular motion is the motion of an object that revolves around a fixed point in a circular path. It can be uniform (constant speed) or non-uniform (changing speed).

Front

What is centripetal force?

Back

Centripetal force is the net force that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses. It depends on the masses of the objects and the distance between them.

Front

What is the formula for gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

What is a black hole?

Back

A black hole is a region in space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is the relationship between mass and gravitational attraction?

Back

The greater the mass of an object, the stronger the gravitational attraction it exerts on other objects.

Front

What is the direction of acceleration in circular motion?

Back

The direction of acceleration in circular motion is always towards the center of the circle.

Front

What is the difference between linear speed and angular speed?

Back

Linear speed is the distance traveled per unit of time, while angular speed is the angle through which an object moves per unit of time.

Front

What is the concept of inertia in circular motion?

Back

Inertia is the tendency of an object to resist changes in its state of motion. In circular motion, it causes the object to move in a straight line unless acted upon by a centripetal force.

Front

What is the role of tension in circular motion?

Back

Tension in a string or rope provides the centripetal force needed to keep an object moving in a circular path.