A B C D Segment A Given the graph above of angular acceleration versus time for a rigid body rotating about a fixed axis, which segment of the graph represents the time interval during which the largest magnitude of net torque is exerted on the rigid body? Segment B Segment C α Segment D A B D E t ‹›
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- Two disks are free to rotate about an axis through their center. The inner disk has a radius a = 20 cm and a 60 N force is applied tangent to the rim as shown. The outer disk has radius b = 40 cm and a force of magnitude F is applied tangent to its rim. What value of F is required to give zero net torque about the center?Please asapA. x x 4e a ñ I8 Paragraph Styles Dictate In a downtown office building, you notice each of the four sections of a rotating door has a mass of 85 kg. What is the width, in meters, of each section of the door if a force of 62 N applied to the outer edge of a section produces an angular acceleration of 0.440 rad/s2? 02 | - 三山告
- At t= 0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 35.0 rad/s² until a circuit breaker trips at time t = 1.70 s. From then on, it turns through an angle 438 rad as it coasts to a stop at constant angular acceleration. Through what total angle did the wheel turn between t= 0 and the time it stopped? Express your answer in radians. 8= Submit Part B - ΑΣΦΑ 1 V Part C Request Answer At what time did it stop? Express your answer in seconds. Submit ΓΨΓ ΑΣΦ 3 Request Answer 2 @ 3 C www. 7 ΑΣΦ) → O ? What was its acceleration as it slowed down? Express your answer in radians per second squared. ? ? rad S Review ConstA thin hoop of radius 0.6 m is rotating about its central axis with an angular velocity of +26 rad/s. At t = 0, a force F is applied tangentially to the rim of the hoop, and 4 s later, the hoop comes to a stop. The rotational inertia of the hoop about its central axis is 0.3 kg-m². a. What is the angular acceleration of the hoop while the net torque is applied? Include a plus/minus sign to indicate direction.The radius of a park merry-go-round is 2.5 m. To start it rotating, you wrap a rope around it and pull with a force of 260 N for 20 s. During this time, the merry-go-round makes one complete rotation. (a) Find the angular acceleration of the merry-go-round. rad/s2 (b) What is the magnitude of the torque exerted by the rope on the merry-go-round? N-m (c) What is the moment of inertia of the merry-go-round? kg-m2 eBook
- please answer this question all parts.On a playground, there is a merry-go-round. In order to get it moving, Bonnie applies a force of 17 N. The merry-go-round measures 5.3 m from the axis of rotation to the edge where Bonnie applies her force. Assuming she applies her force perpendicularly to a line drawn from the axis of rotation, what is the magnitude of the torque t Bonnie imparts to the merry-go-round? T = N.mA disk of radius R = 11 cm is pulled along a frictionless surface with a force of F = 17 N by a string wrapped around the edge. F At the instant when d = 29 cm of string has unwound off the disk, what is the torque exerted about the center of the disk? tc = N.m X
- Chapter 10, Problem 057 GO A pulley, with a rotational inertia of 7.7 x 104 kg-m2 about its axle and a radius of 12 cm, is acted on by a force applied tangentiallý at its rim. The force magnitude varies in time as F = 0.80t + 0.30t, with F in newtons and t in seconds. The pulley is initially at rest. At t = 3.8 s what are (a) its angular acceleration and (b) its angular speed? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show WorkTo study torque experimentally, you apply a force to a beam. One end of the beam is attached to a pivot that allows the beam to rotate freely. The pivot is taken as the origin or your coordinate system. You apply a force of F = Fx i + Fy j + Fz k at a point r = rx i + ry j + rz k on the beam. Part a) Calculate the magnitude of the torque, in newton meters, when the components of the position and force vectors have the values rx = 3.71 m, ry = 0.075 m, rz = 0.085 m, Fx = 1.2 N, Fy = -7.6 N, Fz = 1.2 N. Part b) If the moment of inertia of the beam with respect to the pivot is I = 72 kg˙m^2, calculate the magnitude of the angular acceleration of the beam about the pivot, in radians per second squared.M, a solid cylinder (M=2.27 kg, R=0.131 m) pivots on a thin, fixed, frictionless bearing. A string wrapped around the cylinder pulls downward with a force F which equals the weight of a 0.750 kg mass, i.e., F = 7.357 N. Calculate the angular acceleration of the cylinder. R M F