College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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How do we give something a constant
How can we measure this angular acceleration?
What are the directions of an object’s velocity and acceleration vectors?
when it is subject to non-uniform circular motion?
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- While sitting in physics class one day, you begin to ponder the workings of the analog clock on the classroom wall. You notice as the hands sweep in a continuous motion that there are exactly t = 41 minutes left in class. Calculate the angular velocity of the second hand in radians per second? Calculate the angular velocity of the minute hand in raidans per second? Calcualte the angualr velocity of the hour hand in raidas per second.arrow_forwardtime 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.)arrow_forwardA basketball spinning on someone’s finger undergoes an angular acceleration of -0.15 rad/s and is traveling at 27 rad/s initially. How many revolutions will it make before coming to a stop?arrow_forward
- HELP! I am confused with this, so can you please provide an explanation on what this means and show the answer by plugging in the numbers while solving (also confused about choosing which one to be point of rotation) It would help a lot! Thank you!arrow_forwardI need some help solving this problem: The angular speed of a point on a planet is 5π/11 radian per hour. The equator lies on a circle of radius approximately 6000 miles. Find the linear velocity, in miles per hour, of a point on the equator. Round to the nearest whole number as needed. Thanks so much for your help!arrow_forwardAn athlete swings a 6.30-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.690 m at an angular speed of 0.450 rev/s. What is the tangential speed of the ball? What is its centripetal acceleration? If the maximum tension the rope can withstand before breaking is 128 N, what is the maximum tangential speed the ball can have?arrow_forward
- How do I find the tangential speed of a ball going in uniform circular motion, in the problem I'm working on, a 1.3 m long string makes a 48.8 degree angle below the hoizontal. I am confused as to how I find the w to plug into the Vt=rw equation to get the tangential speed. Thanks for your help!arrow_forwardHi! I'm struggling with this question on my trigonometry homework about angular velocity and linear velocity. A line from the center to the edge of a CD revolving 300 times per minutearrow_forwardAn old problem from a new perspective … again…. A car starts from rest and accelerates to 40 m/s in 8 s. The old Q’s are how far has it traveled and what is it’s accleration rate? The new version is: how many REVOLUTIONS have the tires (that have a radius of 0.5 m) performed? What are the initial, final, and average ANGULAR velocities of the wheels? What is the Angular acceleration of the wheels? Units are not only required to get the answer correct but in this case units will help mightily…arrow_forward
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