Circular Motion & Gravitation

Front

What force keeps satellites in orbit around the Earth?

Back

Gravity

Front

Calculate the centripetal force for a ball weighing 0.12 kg rotating at 3 m/s with an arm length of 0.65 m.

Back

1.66 N

Front

What is the relationship between the radius of a circle and centripetal acceleration?

Back

Inverse

Front

If you double the radius of a circle while keeping the speed constant, what happens to the centripetal force?

Back

It is halved.

Front

Which stars in the Andromeda galaxy have the largest linear velocity?

Back

Stars furthest from the center.

Front

Define centripetal force.

Back

The force required to keep an object moving in a circular path, directed towards the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

a_c = v^2 / r, where v is the velocity and r is the radius.

Front

Explain the concept of gravitational force.

Back

The attractive force between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the formula for gravitational force?

Back

F = G * (m1 * m2) / r^2, where G is the gravitational constant.

Front

What happens to the gravitational force if the distance between two objects is doubled?

Back

It is reduced to one-fourth.