A disk with a diameter of 0.08 m is spinning with a constant velocity about an axle perpendicular to the disk and running through its center.
At this same frequency, what is the period of rotation of this \"halfway point\"?
T =
How long does it take a point on the edge of the disk to travel 1 km?
T1000 =
Suppose we double the diameter of the disk. We still want the same 14 g acceleration at the outer edge. Let f2 be the number of revolutions per second needed to get that acceleration. What is the ratio R = f2/f, where f is your answer to part (a)? Answer according to the following key:
R =
A disk with a diameter of 0.08 m is spinning with a constant velocity about an...
A disk with a mass of 15 kg is spinning about its center with a constant angular acceleration applied to it. Its c value is 1/2 about its center and it is initally spinning at 5 rad/s clockwise. If the disk stops spinning in a time of 1.5 s, how many revolutions does the disk make until it stops? 1.79 rev. 3.75 rev. 11.25 rex 0.60 rev. MacBook Pro $ % 5 & 7 8 E R T Y F...
1). A metal disk with radius, r, is spinning with a constant angular velocity. A red magnet is placed on the disk at and a blue magnet is placed at r. If you compare the tangential speed of the two magnets, a. the red magnet is going half as fast b. the magnets are going the same speed c. the blue magnet is going twice as fast d. the blue magnet is going four times as fast 2). In the...
A mouse steps onto the edge of a disk of radius R that is spinning at a constant angular speed of , rad/second (assume counterclockwise rotation). The mouse moves with the constant velocity towards the cheese, located at the center of the rotating disk. (a) Derive a differential equation for the path of the mouse in polar coordinates. (b) How many revolutions will the disk make before the mouse gets the cheese? The solution should be in terms of ,...
(a) What is the magnitude of the torque on the disk (about the z axis) due to F1? (1pt) (b) What is the magnitude of the torque on the disk due to F2? (1pt) (c) What is the magnitude of the torque on the disk due to F3? (1pt) (d) What is the magnitude and direction (clockwise or counterclockwise) of the angular ac- celeration about the z-axis of the disk? (2pt) (e) If the disk starts from rest, what...
A uniform disk with mass m = 8.55 kg and radius R = 1.35 m lies in the xy plane and centered at the origin. Three forces act on the disk in the +y-direction (see figure below): (1) a force F1 = 335 N at the edge of the disk on the +x-axis, (2) a force F2 = 335 N at the edge of the disk on the ?y-axis, and (3) a force F3 = 335 N at the edge...
A 2.4-m-diameter merry-go-round with a mass of 210 kg is spinning at 20 rpm. John runs around the merry-go-round at 5.0 m/s, in the same direction that it is turning, and jumps onto the outer edge. John's mass is 35 kg. Part A What is the merry-go-round's angular speed, in rpm, after John jumps on? Express your answer in revolutions per minute. O AC O ? W = | rpm rpm Submit Request Answer
please answer 5 and 6 im sorry thats the closest pic i can get to it the disk ntating with a constant angular accelerstion Assurse the axle is frictionkess Ca) Calcudlate the magnituke and direction of the net torpsue prodhuced by the twe lorces b) Determine the magnitude of the angular acceleration of the disk rad/s Cakulate the angular momentum, in kg mP/s, of an ice skater spinning at 6.00 rew/s given is moment of inertia is 0 rew/s given...
A solid disk with mass M (1.00 kg) and radius R (0.200 m) is sitting on a frictionless surface. We analyzed the situation at left below, where a force F (2.00 N) is applied for four seconds, by a string that has been wrapped around the outer surface of a cylindrical disk. Two students are debating the following question. ‘The same force is applied for the same amount of time, but this time by a string attached to the edge...
1. Three children are riding on the edge of a merry‑go‑round that has a mass of 105 kg and a radius of 1.80 m. The merry‑go‑round is spinning at 22.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the 28.0 kg child moves to the center of the merry‑go‑round, what is the new angular velocity in revolutions per minute? Ignore friction, and assume that the merry‑go‑round can be treated as a solid disk and the children...
#2. [Swinging Disk] A uniform circular disk of mass M and radius R is set swinging side-to-side about a frictionless pivot P at its edge (a) What is the disk's moment of inertia about the pivot? (b) Write an expression for the net torque acting on the disk about the pivot when the disk is displaced to the right by angle θ CM (c) Write Newton's 2nd Law for Rotation for the disk when it is displaced as shown. Be...