Centripetal Force

A bicyclist is riding with a tangential velocity of 13.2 m/s around a circular track.The magnitude of the centripetal force is 377 N, and the combined mass of the bicycle and rider is 86.5 kg. What is the track’s radius?

• 40.0 m

• 99.8 m

• 65.4 m

• 53.6 m

Tags

NGSS.HS-PS2-1

Which is true about centripetal force and centripetal acceleration?

• The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force is always pointing outward

• The centripetal acceleration is always pointing outward from the center of an orbit and the centripetal force is always pointing inward

• The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center but in a totally different location

• The centripetal acceleration is always pointing toward the center of an orbit and the centripetal force also pointing toward the center and in the same exact location as the centripetal acceleration

If the centripetal force keeping an object moving in constant circular motion goes away, then which option best describes what occurs to the motion of the object?

• It flies off in a curved line until it hits something

• It keeps going in a circular path until friction stops it

• It flies off in a straight line until it hits something

• It immediately stops moving

Tags

NGSS.HS-PS2-1

A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?

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Tags

NGSS.HS-PS2-1

Centripetal acceleration and force always point

• in the direction of the object's motion

• in the opposite direction of the object's motion

• towards the center of the circle

• towards the outside of the circle

Tags

NGSS.HS-ESS1-4

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

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Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

What does centripetal mean?

• "center-seeking"

• "tangential"

• "equal and opposite"

• "resistance due to mass"

Which of the following is the unit for centripetal force?

• J

• m/s²

• kg⋅m/s

• N

A horse gallops around a circular arena.  The centripetal force on the horse is ___.

• directed outward

• tension

• directed toward the center of the arena

• 9.8 N

A car is rounding a curve as shown in the diagram. Which arrow correctly shows the direction of the centripetal force keeping the car in circular motion?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1