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A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg · m2 and is assumed to be constant. The student then pulls in the objects horizontally to 0.48 m from the rotation axis. (a) Find the new angular speed of the student. 1.66J . Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s (b) Find the kinetic energy of the student before and after the objects are pulled in. before 2.31J . Your response differs from the correct answer by more than 10%. Double check your calculations. J after 5.1 J Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. J
A 0.50 kg mass is attached to a spring with a force constant of 30 N/m, How far is the mass from the equilibrium position when its speed is half the maximum speed
Two stars are at rest 1.0×1014m apart. This is about 10 times the diameter of the solar system. What is the speed of each star at the moment of impact
You throw a 176 g ball straight up to a height of 37.0 m. Calculate the average force exerted by your hand while you are throwing it
neptune circles the sun at a distance of 4.50*10^12 once every 164 years. what is the orbital period of saturn
A 2.4kg toy locomotive is pulling a 1.6kg caboose. The frictional force of the track on the caboose is 0.54N backward all along the track. If the train is accelerating forward at 3 m/s2, what is magnitude of the force exerted by the locomotive on ..
Obtain the wavelengths in vacuum for blue light whose frequency is 6.46 Ã- 1014 Hz
The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert.
The Voyager I spacecraft moves through interstellar space with a speed of 7400m/s. Assuming that the 5.6-m long antenna on the spacecraft is at right angles to the magnetic field, find the induced emf between its ends
calculate the wavelength of matter waves associated with a bullet of 20.0 grams fired at 100. meters per second.x 10
Two charged particles of equal magnitude (-Q and -Q) are fixed at opposite corners of a square that lies in a plane. What is the direction of the force on the test charge due to the two other charges
Wonder Woman and Superman fly to an altitude of 1650 km, carrying betwen them a chest full of jewels that they intend to put into orbit around Earth. At what speed does the chest impact the surface of the water
An object in equilibrimhas three forces exerted on it. A 33N force acts at 90 degrees and a 44N force acts at 60 degrees. What is the magnitude and direction of the third force?
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