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Five identical particles of mass m = 0.30 kg are mounted at equal intervals on a thin rod of length scripted l = 1.13 m and mass M = 2.4 kg, with one mass at each end of the rod. If the system is rotated with angular velocity ? = 60 rev/min about an axis perpendicular to the rod through one of the end masses, determine the following.
(a) the kinetic energy of the system
kg·(m/s)2
(b) the angular momentum of the system
kg·m2/s
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
A scuba diver is 48 m below the surface of a lake, where the temperature is 5°C. He releases an air bubble with a volume of 17cm3. The bubble rises to the surface.
A 3.60 long, 420 steel beams extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 72.0 construction worker stands at the far end of the beam. What is the magnitude of torque about the..
Two objects with masses of 2.10 kg and 6.80 kg are connected by a light string that passes over a frictionless pulley. (a) Determine the tension in the string.
What is the magnitude of the normal force exerted by the car.
Treat a Boron atom as 5 protons at the origin, 2 electrons spread uniformly on a shell (radius 13.2[pm] centered on the origin) , 2 more electrons spread on a shell (radius 105.8[pm] centered on the origin), and its outer electron at x= 211.6 pm.
if the boy is traveling at 1m/s relative to the ground, explain how fast does the boy appear to be moving relative to the woman?
A 10 μF capacitor is charged to 15 V. It is next connected in series with an uncharged 5.00-μF capacitor. The series combination is finally connected across a 50.0-V battery, as diagrammed. Find out the new potential differences across the 5-μF an..
A 200 g block hangs from a spring with spring constant 10 N/m. At t=0 s the block is 23 cm below the equilibrium point and moving upward with the speed of 125 cm/s. What are block's oscillation frequency? What is the block's distance from equilibri..
A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. If a car has a 1000 kg mass and the ball is to be able to lift it from a distance of 1.00 m: (a) What minimum ..
Two satellites are in circular orbits around a planet that has radius 9.00*10^6 m. One satellite has a mass 68.0 kg, What is the orbital speed of the second satellite
A runner accelerates to a velocity of 4.15 m/s due west in 1.50s. His average acceleration is 0.640 m/s^2, also directed due west. What was his velocity when he began accelerating.
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