Before electric hybrid cars, one way that had been suggested for storing the braking energy is to store it in the ke of a spinning mass. the moment of inertia for a hollow cylinder has an inner radius of 7/8 of the otter radius is .9mr^2, where m is the mass of the cylinder and r is simply the radius.
a. what angular velocity in radians per second would be needed to in the spinning cylinder of iron with a mass of 60kg, radius of .20m to store 200,000 joules of energy? what is this in revolutions per minute?
b. torque needed to be applied to the cylinder by the coupling mechanism if 2 joules from above were to be achieved in 1 second at constant acceleration?
c. what would we need to do if we wanted to reduce the weight of the hollow cylinder and keep the energy storage? what is one engineering problem that would need to be addressed on strain limits of materials and forces in rotation objects?
Answers: 2
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
Physics, 22.06.2019 18:00
Which is the most accurate name for the ionic compound cas?
Answers: 1
Before electric hybrid cars, one way that had been suggested for storing the braking energy is to st...
History, 20.10.2019 19:30
Mathematics, 20.10.2019 19:30
Spanish, 20.10.2019 19:30
History, 20.10.2019 19:30
Mathematics, 20.10.2019 19:30
World Languages, 20.10.2019 19:30
Mathematics, 20.10.2019 19:30
Physics, 20.10.2019 19:30