A2 Physics - Circular motion and G-field

The equation for centripetal force is .....................

The equation for angular velocity is ...................

The time taken for one complete revolution is called the _____.

• Period

• Angular velocity

• Frequency

• Acceleration

The gravitational field is...........................

• the region where a charge experiences an electric force

• the region where a magnet experiences a magnetic force

• the region where a mass experiences a gravitational force

Calculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s².

• 2.4 m/s
• 3.6 m/s
• 3.9 m/s
• 4.2 m/s

Calculate the mass of an object if it took 20 N to rotate it in a circle with a radius of 2 meters with a velocity of 4 m/s

• 4.1 kg
• 3.6 kg
• 2.5 kg
• 1.8 kg

Calculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.

• 10 N
• 20 N
• 30 N
• 40  N

You are moving a ball in a circle using 72 N of centripetal force. What would the force be if you doubled the radius of the circle.

• 18 N

• 36 N

• 72 N

• 144 N

What's the acceleration of gravity of a planet with a mass of 1 x 10²⁵ kg and a radius of 5x10⁶ meters?

• .267 m/s²

• 2.67 m/s²

• 26.7 m/s²

• 267 m/s²

What's the acceleration of gravity of a planet with a mass of 1 x 10²² kg and a radius of 5x10⁵ meters?

• .267 m/s²

• 2.67 m/s²

• 26.7 m/s²

• 267 m/s²