Uniform Circular Motion Problems



Aca PhysicsCircular Motion WorksheetName: ____________A truck goes around a curve at 20 m/s. The radius of the curve is 50 m. Calculate the centripetal acceleration of the truck.What is the centripetal force acting on a 1.5 kg mass moving in a circular path with a centripetal acceleration of 18 m/s2?A race car makes one lap around a race track of radius 50 meters in 9 seconds.What was the circumference of the track?What was the car’s magnitude (and direction!) of velocity?What was the car’s magnitude (and direction!) of acceleration?An athlete whirls a 7 kg hammer tied to the end of a 1.3 m long chain in a horizontal circle. The hammer makes one revolution in 1 s. What is the centripetal force (and direction!) acting on the hammer?A student swings a 0.5kg rubber ball attached to a string over her head in a horizontal, circular path. The string is 1.5 meters long and in 60 seconds the ball makes 120 complete circles.What is the velocity of the ball?What is the ball’s centripetal acceleration?What is the ball’s centripetal force?A coin is place on a vinyl stereo record (a what?) making 1 revolution in 0.56s.3982720406400043307003048100425450027940A) In what direction is the acceleration of the coin? B) Find the magnitude of the acceleration when the coin is placed:0.05 m from the center of the record0.10 m from the center of the record0.15 m from the center of the recordIn a skating stunt known as crack-the-whip, a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of 80.0 kg and is 6.10 m from the pivot. He is skating at a speed of 6.80 m/s. Determine the amount of the centripetal force that acts on him.A 0.015-kg ball is shot from the plunger of a pinball machine. Because of the centripetal force of 0.028 N, the ball follows a circular arc whose radius is 0.25 m. What is the speed of the ball?A flea sits on the edge of a classic record album that is making 1 revolution in 0.56s. The flea is 0.20 m from the center of the record.What is the flea’s velocity?What is the flea’s centripetal acceleration?A 100g mass is attached to a string that is 75 cm long. The mass is swung in a horizontal circle that goes around once every 0.80 seconds.What is the centripetal acceleration of the mass?What is the tension in the string?A 0.50 kg mass is attached to a string 1.0 meter long and moves in a horizontal circle at a rate of 0.5 seconds per revolution.Find the centripetal acceleration of the mass.Calculate the tension in the string.It takes a 900 kg car 12.3 seconds to travel at a CV around a circular track of radius 90 meters.What is the centripetal acceleration of the car?How much centripetal force is acting on the car?What provides this centripetal force?Challenge Problem: The radius of earth’s orbit around the sun is approximately 1.5 X 1011 meters. The mass of the earth is 5.98 X 1024 kg.Find the centripetal acceleration of the earth.How much centripetal force is acting on the earth?What provides this centripetal force? ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download