A strap, rod, or something comparable is used to spin up the disc. I imagine someone hand-starting a lawnmower. If he pulls the strap with a final speed before pulling the strap away, what is the rotation rate of the disk, w in rev/s? The moment of inertia of a disc is 1/2MR?. There's no sliding. Strap's final speed = v = 0.88 m/s. • The disc's radius is R = 0.7 m

A strap, rod, or something comparable is used to spin up the disc. I imagine someone hand-starting a lawnmower. If he pulls the strap with a final speed before pulling the strap away, what is the rotation rate of the disk, w in rev/s? The moment of inertia of a disc is 1/2MR?. There's no sliding. Strap's final speed = v = 0.88 m/s. • The disc's radius is R = 0.7 m

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: 4:12 C all 79% Question 1 Not yet answered Points out of 1.00 P Flag question A disc of radius of 15…

A: Here, Given π=3. Now,

Q: catus: D C=D QUESTION 27 The figure shows a rigid structure consisting of a circular hoop of radius…

A: Question 27

Q: A record with a radius of 0.14 m, is turned 236 degrees in 18 seconds. What is the angular speed in…

A: it is time rate at which body revolves around an axis and it is measured in rad/sec.

Q: Starting at the point (4.61 m, 0 m) on the x-y plane, a physics student runs around the origin…

Q: An object rotates a full circle of radius 2m in 5 sec. What is the tangential speed of the object. O…

A: Let θ be the angle swept out by the object in that period of time. Then we define the (average)…

Q: How do you find acceleration using angular velocity and time ? This simulation was for 10 seconds at…

A: Here given that the value of time 10 sec and angular velocity is 3 We have to find the acceleration…

Q: Question 3: derive 0 = 00 + (ww + wo) t/2. %3D You probably need to use prior derived results.

A: Please see the answer below

Q: A turntable of radius 60 cm undergoes constant acceleration from rest to 3.0 rev/s in 2.5 seconds.…

Q: ??‍♀️

Q: An ultracentrifuge accelerates from rest to 100,000 rpm in 3.50 min. (a) What is its angular…

Q: At time t=0s, a wheel has an angular displacement of zero radians and an angular velocity of 15…

Q: what are questions 3 and 4? What is the angular velocity after 15 s? What is the angular…

A: A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular…

Q: A 24-inch diameter tire rotates 8.2 revolutions per second a. determine the angular speed of the…

Q: A disk that is 3 m in radius spins at the rate of 4 revolutions per second. 000 What is its angular…

A: Given data Radius of the disk, R=3 m Rate of revolution, ω=4 revoluyiond/ second

Q: 2. We can use a simple model which uses our understanding of uniform circular motion to estimate the…

A: Given: Mass of planet = M Radius of planet = R Mass of stone = m

Q: A phonograph record accelerates from rest to 35.0 rpm in 3.73 s. (a) What is its angular…

A: The initial angular speed is, ωi=0 The final angular speed is, ωf=35 rpm=3.665 rad/s The time…

Q: An automobile engine slows down from 3800 rpmrpm to 1400 rpmrpm in 2.0 s A)Calculate its angular…

Q: 8. When a grinder is switched on, a 1.75 kg, 22.0 cm diameter grinding wheel (disk) uniformly…

Q: A leg swings from the hip through 89.3 deg in 0.66 seconds. Calculate the angular velocity of the…

A: The angular displacement: ;The time period: ;To find the angular velocity of the leg around the hip.…

Q: The instantaneous rate of change of acceleration is known as "jerk". Which of the following…

A: ( If you have any questions related to this problem please feel free to ask me).

Q: Flying Circus of Physics When a slice of buttered toast is accidentally pushed over the edge of a…

Q: At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 7.91 m above…

A: The number of revolutions is N = 2.744378 rev. Explanation:

Q: Starting from rest , a wheel with constant angular acceleration spins up to 40 rpm in a time 't'.…

Q: Bob wants to be a pilot, so he tested for the stresses of flying high-speed jets in a whirling,…

Q: Km A bicycle trave ling 15 * has wheels of 35 inch diameder. a) what is the angular spead of He…

Q: A FIND MAGNITUDE OF ANGULAR ACCELERATION 6) HOW MUCH TIME DOES IT TAHE FOR WHEEL To GO THROUG H THE…

A: Givenm=4.50 kg R=34.5 mθ=13.8 radω0=22.0 rad/sωf=13.5 rad/s

Q: 7.4 Angular Acceleration • A merry-go-round accelerating uniformly from rest achieves its operating…

Q: A figure skater performs a twisting jump. She rotates around her longitudinal axis 2 times in 0.65…

A: Given: figure skater performs a twisting jump. She rotates around her longitudinal axis 2 times in…

Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

A strap, rod, or something comparable is used to spin up the disc. I imagine someone hand-starting
a lawnmower.
If he pulls the strap with a final speed before pulling the strap away, what is the rotation rate of the
disk, w in rev/s? The moment of inertia of a disc is 1/2MR?. There's no sliding.
Strap's final speed
= V
= 0.88 m/s.
• The disc's radius is R = 0.7 m
The small disc's radius is 2 cm
• The disc's mass is M = 2.7 kg

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Angular speed, acceleration and displacement

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

time of 5 rotations (16.5 s) Time of 1 rotation (3.3 s) Distance from shoulder to elbow (20.32cm) Distance from shoulder to middle of hand (56.99cm) A. What was the average angular acceleration (degrees/s2and rad/s2) of the hand? How do you know?B. What was the average centripetal acceleration (m/s2) of the hand? (Hint: remember, it is going in a circle and acp = v2/r.)
A phonograph record accelerates from rest to 36.0 rpm in 4.53 s. (a) What is its angular acceleration in rad/s²? rad/s² (b) How many revolutions does it go through in the process? rev
When a fan is turned off, its angular speed decreases from 168 rpm to 64.0 rpm in 6.08 s. A) what is the angukar acceleration of the fan? B) How fast the edges of the blades are moving (in m/s) at time 6.08 s, if they are 86.0 cm long?
Pls help
During a very quick stop, a car decelerates at 7.69m/s?. a) What is the angular acceleration of its 0.195-m-radius tires, assuming they do not slip on the pavement? rad/s? b) How many revolutions do the tires make before coming to rest, given their initial angular velocity is 89 rad/s? rev c) How long does the car take to stop completely? d) What distance does the car travel in this time? e) What was the car's initial velocity? m/s
Determine the rotational inertia of a bowling ball with a mass of 5 kg and a radius of 10.1 cm. A. 510 kg • cm² B. 765 kg • cm² C. 1,020 kg • cm² D. 204 kg • cm²