A child twirls a 0.19 kg mass attached to the end of a 29 cm long piece of string. He twirls the mass around at 2.3 revolutions per second in a vertical plane. Calculate the tension (in N) in the string when the mass is at the top of the circle. T=? 13.37 N O9.65 N 07.62 N 21.15 N
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- FXF231G A 0.60 kg object is swung in a vertical circular path on a string 0.80 m long. If its speed is 6.00 m/s at the top of the circle, what is the tension in the string there? Option1 Option2 Option3 Option4 Option5 21.12 14.68 12.40 8.88 4.36A roller-coaster car of mass 309 kg (including passengers) travels around a horizontal curve of radius 35.2 m. Its speed is 21.3 m/s. a. What is the magnitude of the total force exerted on the car by the track? answer in N b. What is the direction of the total force exerted on the car by the track? Enter a positive angle if the direction is above horizontal and a negative answer if the direction is below horizontal. answer in degrees c. If the track is frictionless, then what banking angle would ensure that the car does not slide off of the track? (The banking angle is the angle between the direction normal to the track and the vertical.) answer in degreesA pickup truck has a box sitting loose in its bed. The box has a mass of 2.5kg and the coefficient of static friction between the box and the pickup bed is 0.8. The mass of the truck is 3150 kg and its tires have a coefficient of static friction with the road of 0.9. the truck is currently going through a roundabout with a radius of 30m. How fast can the truck go and not have the box slide on the truck bed? Please answer in m/s.
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- A 0.30-kg object attached to the end of a string swings in a vertical circle (radius = 60 cm). At the top of the circle the speed of the object is 6.2 m/s. What is the magnitude of the tension in the string at this position? Question 1 options: 22 N 6.6 N 16 N 19 N 54 NA jet flying at 136 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, and the mass of the jet is 2.08 x 105 kg. Calculate the magnitude of the necessary lifting force. L= iA 0.208 kg toy can be whirled in a horizontal circle of 1.0 meter radius at a maximum of 3.0 rev/s before the string or cable breaks. What is the force needed to break the string?