A grinding wheel 0.21 m in diameter rotates at 2500 rpm . Part A Calculate its angular velocity in rad/s. Express your answer using three significant figures. rad/s Submit Request Answer Part B What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and includ the appropriate units HA Value Units Submit Request Answer Part C

A grinding wheel 0.21 m in diameter rotates at 2500 rpm . Part A Calculate its angular velocity in rad/s. Express your answer using three significant figures. rad/s Submit Request Answer Part B What is the linear speed of a point on the edge of the grinding wheel? Express your answer to two significant figures and includ the appropriate units HA Value Units Submit Request Answer Part C

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)...

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A 120 g ball and a 220 g ball are connected by a 30-cm-long, massless, rigid rod. The balls rotate about their center of mass at 150 rpm What is the speed of the 120 g ball? Express your answer with the appropriate units. v= μÀ Value Submit Units ? Units input for part A Previous Answers Request Answer
A 1.15-kg grinding wheel 22.0 cm in diameter is spinning counterclockwise at a rate of 20.0 revolutions per second. When the power to the grinder is turned off, the grinding wheel slows with constant angular acceleration and takes 80.0 s to come to a rest Part A What was the angular acceleration (in rad/s) of the grinding wheel as it came to rest if we take a counterclockwise rotation as positive? Express your answer in radians per second squared. V ΑΣΦ Submit Request Answer Part B ? rad/s2 How many revolutions did the wheel make during the time it was coming to rest? Express your answer as a number of revolutions. ΜΕ ΑΣΦ Submit Request Answer Provide Feedback ? revolutions Next>>
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Which of the ff. best describes a scientific law?a.It implies something accurate b. It implies experimentation results c. It summarizes observed facts d.It describes and observes physical results The rate of rotary motion is called a. Angular velocity b. Angular motion c. Angular displacement d. Angular acceleration What average force is necessary to stop a .45 caliber bullet of mass 15 grams and speed of 300 m/s as it penetrates a block to a distance of 5 cm?a.12.6 kN b.13.5 kN c.13.0 kN d. 12.0 kN
A hollow spherical shell with mass 2.00 kg rolls without slipping down at 38° slope. a. Find the acceleration, the friction force, and the minimum coefficient needed to prevent slipping. b. How would your answers to part a) change if the mass were doubled to 4.00 kg?
Multiple part question Here are the needed details: Five rotations took 5.15 seconds 1 rotation took 1.07s Distance from shoulder to elbow is 29 cm distance from shoulder to middle of the hand is 57cm. Questions: 2. A how far in degrees did the hand travel during the five rotations? B. How far in radians did the hand travel during the five rotations? C. How far in meters did the hand travel during the five rotations? 3. A. What was the average angular speed (degrees/s and rad/s) of the hand? B. What was the average linear speed (m/s) of the hand? C. Are the answers to a and b the same or different? Explain.
The 2.4 kg , 4.6-cm diameter disk is rotating as shown.
help with two part problem
A bicycle wheel starts to accelerate fromw- 8.1 rad/s. If the wheel goes through 175 revolutions in 15 seconds determine the final angular velocity of the wheel. Express your answer in units of rad/s using one decimal place.
3. Block C has a constant downward velocity of 30 in/s. Determine the angular velocity of crank AB when it is in the position shown. B 6 in. 12 in. 45°
Note: this problem does not require a kinematics table, as it does not involve the angular velocity changing at all. Both answers only require a single equation which you can find in your book. 3. The tire of a car has a radius of 0.26m. As the car travels down the street, the wheel spins with an angular velocity of w-80rad/s. a. How ow many times does the wheel spin per second? b. How fast is a point on the edge of the tire moving, in meters per second? (Incidentally, this is equal to the speed of the car as it drives down the road.)
Using the equations attached solve the following: 1.What is the average angular velocity between t = 2.0 s and t=3.1 s ? Express your answer using two significant figures. 2.What is the average angular acceleration between t = 2.0 s and t =3.1 s ? Express your answer using two significant figures.