Centripetal Force - WS - L13 - PHY

What does C represent in this diagram?

• Weight

• Centripetal Force

• Velocity

• Centrifugal Force

A car with mass m travels around a curve with velocity v. If the radius of the usual curve is increased by a factor of 3, what effect does this have on the centripetal force?

• F/3

• 3F

• 9F

A car travels around a bend in an arc of a circle. Which force acts as the centripetal force on the car?

• Tension

• Thrust

• Weight

• Friction

Racing cars are fitted with tyres called 'slicks', which have no tread pattern for dry tracks in order to (a)   the friction and the contact with the surface.

• Increase
• Reduce

• Maintain

• Minimize

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

• 30N

• 5N

• 10N

• 40N

Which letter represents the acceleration on the object?

• A) B

• B) D

• C) C

• D) A

Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3m/s if the ball weighs 0.12kg and her arm is 0.65m long.

• 0.38N

• 1.66N

• 1.23N

• 0.55N