In a physics demonstration a stationary mass m1 020kg, Ask an Expert

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In a physics demonstration, a stationary mass m1 = 0.20kg slides down a frictionless ramp and then collides with a second mass m2 = 0.40 kg. The second mass then travels into a vertical loop with radius r = 0.36m. What is the height H needed so that the second mass completes the loop without leaving the track? Find the height needed if you reverse the masses. (Have the .40 kg mass push the .20 kg mass through the loop)

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