A high-speed flywheel in a motor is spinning at 500 rpmrpm when a power failure suddenly occurs. The flywheel has mass 35.0 kgkg and diameter 75.0 çmcm, The power is off for 30.0 ss, and during this time the flywheel slows due to friction in its axle bearings. During the time the power is off, the flywheel makes 160 complete revolutions. a) At what rate is the flywheel spinning when the power comes back on? Express your answer in radians per second. b) How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on? Express your answer in seconds. c) How many revolutions would the wheel have made during this time? Express your answer in revolutions.
Q: The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.57 m and 1.01 m,…
A:
Q: A solid 0.4150 kg0.4150 kg ball rolls without slipping down a track toward a vertical loop of radius…
A: Given values: Mass of the ball, m = 0.415 kgRadius of the loop, R = 0.8750 mLet the speed at the top…
Q: The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed…
A: Given: Angular speed of the tub is 5.0 rev/s. Time taken to reach the angular speed of 5.0 rev/s is…
Q: In the figure, two 7.60 kg blocks are connected by a massless string over a pulley of radius 1.60 cm…
A: a) Apply the second angular kinematic equation to determine the angular acceleration of the pulley.
Q: A 2 kg ball with a radius of 0.35 meters is initially at rest. The rotational inertia equation for…
A: We know that Torque= Ta=Fr
Q: The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.70 m and 1.01 m,…
A: Given Data: The diameter of the main rotor is, dm=7.70 m The diameter of a tail rotor is, dt=1.01 m…
Q: n the figure, Pulley A, rotating at 20 rad/s, controls the motion of Pulley B. The motor of pulley A…
A: Given:- In the figure Pulley A, rotating at ωA= 20 rad/s, controls the motion of Pulley B. The…
Q: The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.55 m and 1.06 m,…
A: Write the given values of this problem. The radius of the main motor=7.552Rmain=3.77 mThe Radius of…
Q: A solid 0.7350 kg ball rolls without slipping down a track toward a vertical loop of radius R =…
A:
Q: A solid 0.6950 kg ball rolls without slipping down a track toward a vertical loop of radius R =…
A:
Q: The wheel in the figure has eight equally spaced spokes and a radius of 45 cm. It is mounted on a…
A: Radius ( R ) = 45 cm Angular speed = 2.4 rev/s Length of arrow ( L ) = 25 cm = 0.25 m
Q: In the figure, two 7.70 kg blocks are connected by a massless string over a pulley of radius 2.30 cm…
A:
Q: A spin bike is an indoor bike that is designed to duplicate the feeling of regular road cycling. A…
A: Given: The mass of the disk is m=12.5 kg. The radius of the disk is r-0.23 m. The mass of the ring…
Q: A disk of mass 3.3 kg and radius 0.25 m is initially spinning at 510 rpm. A brake is applied until…
A:
Q: A flywheel in the form of a uniformly thick disk of radius 1.78 m has a mass of 35.6 kg and spins…
A: Given: The mass of the wheel is 35.6 kg. The radius of the wheel is 1.78 m. The initial angular…
Q: A cylinder of radius R and mass m rolls on a floor without slipping with a speed v. The cylinder…
A:
Q: A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade…
A: mass = 0.65 kg Length (L) = 0.55 m
Q: A large wind turbine has I= .45 mr². The mass of the turning hub and blades is 3800 kg with a radius…
A:
Q: The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.70 m and 1.03 m,…
A: Given data The diameter of the main rotor is: dmain rotor = 7.70 m The diameter of the tail rotor…
Q: Problem 5: With the aid of a string, a gyroscope is accelerated from rest to 31 rad/s in 0.36 s.…
A: Given data The initial angular speed of the gyroscope is: ωi=0 rad/s The final angular speed of the…
Q: A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its…
A: Given, Energy produced by car, KE = 3.38×10^9 Radius of flywheel, 'r' = 0.517 m Mass of flywheel,…
Q: A stroboscope is a light that flashes on and off at a constant rate. It can be used to illuminate a…
A: We have been given that the rotating speed is 16.7 rev/s.
Q: A solid 0.5750 kg ball rolls without slipping down a track toward a vertical loop of radius R =…
A: In the Question it is given that A solid 0.5750 kg ball rolls without slipping down a track toward…
Q: An airplane propeller spins at 2,000 rev/min while the airplane files at at a speed of 476 m/s…
A: Here, the important step to note is that the rotational speed of top and the flying speed of the…
Q: A 21 mm diameter glass marble with a mass of 25 g rolls without slipping down a track toward a…
A:
Q: A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its…
A: The energy produced by the car, The radius of the flywheel, Mass of flywheel,
Q: A turntable rotates at 33 rev/min. Calculate the angular velocity of the turntable. A particle on…
A: Angular velocity = 33 rev/min Distance from centre is r = 0.14 m
Q: A concept car includes a solid disk-shaped flywheel which can be spun up to store rotational kinetic…
A: Given data : Mass of flywheel, m=380kg Radius of the flywheel, r=0.4m Angular speed of the flywheel,…
Q: An optical disk drive in your computer is spinning at 10,000 rpm (1045 rad/s). It decelerates to a…
A:
Q: A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that…
A:
Q: wheel of radius 1.0 m is rotating with a constant angular speed, ω, of 2.0 rad/s. What is the linear…
A: Correct option is C) 2.0 m/s
Q: 3. A mass hangs from a fixed pulley. The mass is released from rest. Find the speed of the mass when…
A: We know that: m1=8.0 kg r=0.25 m m2=2.6 kg h=0.85 m Applying conservation of energy:…
Q: A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its…
A: We will first write an expression for rotational kinetic energy of an object. Then we use the given…
Q: A grindstone with a mass of 48.2kg and radius 0.856m maintains a constant rotation rate of 4.93rev/s…
A: Mass of grindstone (m)=48.2 kg Radius of grindstone (r)= 0.856m Constant angular velocity (ωo)=…
Q: Problem 7 : A sphere of radius r0 = 24.0 cm and mass m = 1.20kg starts from rest and rolls without…
A: (given) Radius of sphere (r0) = 24 m Mass of sphere = 1.20 kg Inclined angle=…
Q: A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its…
A: given that,Energy E = Mass of flywheel m = 34.8 kg Radius of flywheel R = 0.577 m, now we find the…
Q: Computation An electric grinder is switched on at t = 0, accelerates uniformly for 17 s to its…
A:
Q: A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its…
A:
Q: A solid 0.6350 kg ball rolls without slipping down a track toward a vertical loop of radius ?=0.6350…
A: At the top of circular track loop N+mg=mv2RAs, the rolling of solid ball without slipping is in…
Q: A solid 0.7350-kg ball rolls without slipping down a track toward a loop-the-loop of radius R 0.8950…
A: Let va be the speed of the ball at height H, vb be the speed of the ball at lowest point. R be the…
Q: A small steel ball rolls counterclockwise around the inside of a stationary 30.0-cm-diameter…
A:
Q: The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.61 m and 1.06 m,…
A: The speed of the tip of the rotor is given by, v=rω Here, r is the radius of the rotor and ω is the…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 4 images
- Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. An industrial flywheel has a 1.5 m diameter and a mass of 250 kg. A motor spins up the flywheel with a constant torque of 50N⋅m50N⋅m. How long does it take the flywheel to reach top angular speed of 1200 rpm? Show a diagramA large wind turbine (typical of the size and specifications of a turbine that you see in a modern wind farm) has three blades connected to a central hub. The blades are 50 m long and rotate at 10 rpm. What angular speed ω does this correspond to? What is the speed ν of the tip of a blade? What is the speed of a point 25 m from the hub?A solid 0.5950 kg ball rolls without slipping down a track toward a vertical loop of radius ?=0.6550 m. What minimum translational speed ?min must the ball have when it is a height ?=1.008 m above the bottom of the loop in order to complete the loop without falling off the track? Assume that the radius of the ball itself is much smaller than the loop radius ?. Use ?=9.810 m/s2 for the acceleration due to gravity.
- he diameters of the main rotor and tail rotor of a single-engine helicopter are 7.56 m and 1.06 m, respectively. The respective rotational speeds are 447 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor m/s tail rotor m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor = vsound vtail rotor = vsoundAn electric grinder is switched on at t = 0, accelerates uniformly for 15 s to its operating angular speed of 22 rad/s. The wheel then turns at constant angular speed for 35 s and is switched off, slowing uniformly at 3.5 rad/s² until it stops. From the time it is switched off, how long does the grinder take to stop turning? t = S Record your numerical answer below, assuming three significant figures. Remember to include a "-" as necessary.A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 131-mile trip in a typical midsize car produces about 3.01 x 10 J of energy. How fast would a 38.5-kg flywheel with a radius of 0.597 m have to rotate to store this much energy? Give your answer in rev/min. Number i jud eTextbook and Media Units >
- 9.16 A flywheel in a motor is spinning at 570.0 rpm when a power failure suddenly occurs. The flywheel has mass 40.0 kg and diameter 75.0 cm. The power is off for 33.0 ss, and during this time the flywheel slows down uniformly due to friction in its axle bearings. During the time the power is off, the flywheel makes 220.0 complete revolutions. At what rate is the flywheel spinning when the power comes back on? Express your answer in revolutions per minutes.The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.63 m and 1.01 m, respectively. The respective rotational speeds are 459 rev/min and 4,150 rev/min. Calculate the speeds of the tips of both rotors. main rotor m/s tail rotor m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor = vsound vtail rotor = vsoundA flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 144-mile trip in a typical midsize car produces about 1.05 x 109 J of energy. How fast would a 18.7-kg flywheel with a radius of 0.247 m have to rotate to store this much energy? Give your answer in rev/min.
- In the figure, two 5.70 kg blocks are connected by a massless string over a pulley of radius 140 cm and rotational inertia 7.40 x 104 kg-m². The string does not slip on the pulley: it is not known whether there is friction between the table and the sliding block; the pulley's axis is frictionless. When this system is released from rest, the pulley turns through 1.20 rad in 126 ms and the acceleration of the blocks is constant. What are (a) the magnitude of the pulley's angular acceleration, (b) the magnitude of either block's acceleration, (c) string tension T, and (d) string tension T;? Assume free-fall acceleration to be equal to 9.81 ms?. (a) Number Units (b) Number Units (c) Number Units (d) Number Units >A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned in a 187-mile trip in a typical midsize car produces about 2.84 x 109 J of energy. How fast would a 9.42-kg flywheel with a radius of 0.237 m have to rotate to store this much energy? Give your answer in rev/min.In the figure below, two 7.00 kg blocks are connected by a massless string over a pulley of radius 1.30 cm and rotational inertia 3.50 x 10-4 kg · m2. The string does not slip on the pulley; it is not known whether there is friction between the table and the sliding block; the pulley's axis is frictionless. When this system is released from rest, the pulley turns through 0.150 rad in 90.0 ms, and the acceleration of the blocks is constant. T, T (a) What is the magnitude of the pulley's angular acceleration? rad/s2 (b) What is the magnitude of either block's acceleration? m/s2 (c) What is the string tension T? N (d) What is the string tension T2? N