Reference no: EM13116263
A heavy flywheel is accelerated (rotationally) by a motor that provides constant torque and therefore a constant angular acceleration alpha. The flywheel is assumed to be stationary at time t = 0 in Parts A, B, and C of this problem.
a). Find the time t_10 it takes to accelerate the flywheel to 10.0 rps (revolutions per second) if alpha is 5.00 radians/s^2.
b). Find the time t to accelerate the flywheel from rest up to angular velocity omega_1.
Express your answer in terms of alpha and omega_1.
c). Find the angle theta_1 through which the flywheel will have turned during the time it takes for it to accelerate from rest up to angular velocity omega_1.
Express your answer in terms of any of the following: omega_1, alpha, and/or t_1.
d). Assume that the motor has accelerated the wheel up to an angular velocity omega_1 with angular acceleration alpha in time t_1. At this point, the motor is turned off, and a brake is applied that decelerates the wheel with a constant angular acceleration of -5alpha. Find t_2, the time it will take the wheel to stop after the brake is applied (that is, the time for the wheel to reach zero angular velocity).
Express your answer in terms of any of the following: omega_1, alpha, and/or t_1.
|
How do muscle fibers contract
: How do muscle fibers contract? Describe why ATP and metal ions are important. Describe the motor proteins, cytoskeletal elements, and other accessory proteins that are involved and what purpose each component serves.
|
|
Explaining the changing role of hr management
: Explaining the changing role of HR management in response to trends in globalization, technology, diversity, e-business, and ethics.
|
|
What is normal sinus rhythm
: What is "normal sinus rhythm?" Why is the word "sinus" used?
|
|
How many grams of ammonia would produced
: Under certain conditions, the formation of ammonia from nitrogen and hydrogen has an 8.12% yield. Under such conditions, how many grams of NH3 will be actually produced.
|
|
Find out the angle thetathrough which flywheel accelerate
: Find out the angle theta_1 through which the flywheel will have turned during the time it takes for it to accelerate from rest up to angular velocity omega_1.
|
|
Find standard deviation minimizes the annual cost
: What standard deviation (within 0.001 inch) minimizes the annual cost of producuign elevator rails. You do not need to try standard deviations in excess of 0.02 inches.
|
|
Probability individuals have conditions by outside factors
: Assume that causes of heart failure between individuals are independent. What is the probability that three individuals have conditions caused by outside factors?
|
|
Define eliminating the middleman
: Assume that you have a local furniture store in your area that sells direct to the customer thereby eliminating the middleman.
|
|
Production-volume variance
: Using the above data, fill in the following blanks with the variance amounts. Use F for favorable or U for unfavorable for each variance. Total Overhead Variable Fixed, 1. Spending variance , 2. Efficiency variance ?, 3. Production-volume variance ?,..
|