Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
At t = 0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by ?(t) = (260 rad/s)t ? (18.0 rad/s2)t2 ? (1.55 rad/s3)t3.
(a) At what time is the angular velocity of the motor shaft zero?
s
(b) Calculate the angular acceleration at the instant that the motor shaft has zero angular velocity.
rad/s2
(c) How many revolutions does the motor shaft turn through between the time when the current is reversed and the instant when the angular velocity is zero?
rev
(d) How fast was the motor shaft rotating at t = 0, when the current was reversed?
rad/s
(e) Calculate the average angular velocity for the time period from t = 0 to the time calculated in part (a).
A 3.3-m-diameter merry-go-round with rotational inertia 100kg?m2 is spinning freely at 0.60rev/s. Determine the total energy lost to friction
High-speed stroboscopic photographs show that the head of a200-g golf club is traveling at 55m/s just before it strikes a 46-ggolf ball at rest on a tree. What is the speed of the golf ball just after impact
A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. Calculate the magnitude of the electric field due to the disk at the point x = 15 cm along the x-axis
When you take your 1200 kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 15.7 m/s. The coefficient of static friction between the car and the road is 0.80. Assuming your car doesn't skid, what is the force exerted on it ..
A solid sphere of radius 40.0 cm has a total positive charge of 30.0 µC uniformly distributed throughout its volume. Calculate the magnitude of the electric field
A ball is thrown horizontally from the roof of a building 45.0m tall and lands24.0m from the base. What was the ball's initial speed
Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2
a ball of mass 0.075 kg is fired horizontally into a ballistic pendulum. the pendulum mass is 0.350kg. How much kinetic energy was lost in the collision
A solenoid has a cross-sectional area of 2.20 10-4 m2, consists of 200 turns per meter, and carries a current of 0.56 A. Find the average current induced in the coil
A container of volume 0.40m3 contains 3.3 mol ofargon gas at 28°C. Assuming argonbehaves as an ideal gas, find the total internal energy of the gas
A bowling ball weighing 71.2 is attached to the ceiling by a 3.80 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured..
A car initially travelling at 25.90 m/s undergoes a constant negative acceleration of magnitude 1.60 m/s2 after it brakes are applied. How many revolutions does each tire make before the car comes to a stop, assume the car does not skid and the ti..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd