Suppose you are sitting on a rotating stool holding a 2-kg mass in each outstretched hand. If you suddenly drop the masses, will your angular velocity increase, decrease, or stay the same? Explain.
Answer to relevant QuestionsTwo spheres look identical and have the same mass. However, one is hollow and the other is solid. Describe and experiment to determine which is which.On the basis of the low of conservation of angular momentum, discuss why a helicopter must have more than one rotor (or propeller). Discuss one or more ways the second propeller can operate to keep the helicopter stable.If a pendulum clock is accurate at sea level, will it gain or lose time when taken to high altitude? Why?What kind of waves do you think will travel down a horizontal metal rod if you strike its end?(a) Vertically from above and (b) Horizontally parallel to its length?An elastic cord is 65 cm long when a weight of 75 N hangs from it but is 85 cm long when a weight of 180N hangs from it. What is the “spring” constant k of this elastic cord?
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