11_05_Rolling_Car

11_05_Rolling_Car - Hint Use Work = T ∆ x to find the...

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Physics 211 11/5 HW Handout Name_____________________ Fall 2001 Rolling Car Due Thursday 11/8 1) A car with four wheels (disks), each with mass m, rolls without slipping, (v T = v R ) on frictionless axles, on a horizontal surface. A rope is attached to the car’s bumper and has a tension, T = 200N. The car, starting from rest, moves a distance x = 5m under the influence of this tension. a) Find the velocity after the car is a distance x from its starting point.

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Unformatted text preview: Hint: Use Work = T ∆ x to find the total energy, Then use proportional reasoning to find the fraction in KE T . This bucket has the rotational energy of the four wheels. This bucket has the translational energy of the four wheels plus the translational energy of the car’s body. b) Find the acceleration of the car. Show your reasoning. Tension = T 10kg 10kg 40kg Tension = T 10kg 10kg 40kg ∆ x v = 0 v = ? a = ? KE R KE T 28...
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