Determine the kinetic energy stored in the flywheel

Reference no: EM13334171

A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.50 m and a mass of 475 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5,500 rev/min.

(a) Find the kinetic energy stored in the flywheel.

(b) If the flywheel is to supply energy to the car as a 15.0-hp motor would, find the length of time the car could run before the flywheel would have to be brought back up to speed.

Reference no: EM13334171

Questions Cloud

Explain what is the minimum ph at which cr(oh)3(s) : In a particular solution, [Cr3+]=3.9x10-4 mol/L. What is the minimum pH at which Cr(OH)3(s) will precipitate from this solution. Assume the temperature is 25oC. For Cr(OH)3(s), Ksp=6.3x10-31 at 25oC. Give your answer with three digits

Find the direction will it emerge from the bowl : A light ray is directed at the inside of a highly polished silver hemispherical bowl and is incident parallel to the symmetry axis of the bowl. in what direction will it emerge from the bowl

What is the direction of the resultant force on the car : Two forces act on a car. Force A is 120 N, west and force B is 200 N at 60° N of W. What is the direction of the resultant force on the car

Contract assembly work for hewlett-packard : Barcelona Assembly, located in Barcelona, Spain, does contract assembly work for Hewlett-Packard. Each item produced on the assembly line can be thought of as an experimental trial. For each trial the outcome is either a good or a defective item.

Determine the kinetic energy stored in the flywheel : A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.50 m and a mass of 475 kg. Find the kinetic energy stored in the flywheel

Explain the equilibrium constant for the reaction : The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..

Prepare a single-step income statement for the year ended : Prepare a single-step income statement for the year ended December 31, 2010. Include earnings per share for earnings before extraordinary items and net income.

What are the labor hours productivity : What is the average number of customers waiting in line to purchase a ticket and what is the probability that there are at least two others waiting in line to buy a ticket?

Determine what is the projects npv of 20-year : A project has annual cash flows of $3,500 for the next 10 years and then $10,500 each year for the following 10 years. The IRR of this 20-year project is 12.94%.

User Account

All Pages