19. What happens to centripetal acceleration as the radius of curvature decreases and the speed is constant, and why? It increases, because the centripetal acceleration is inversely proportional to the radius of the curvature It increases, because the centripetal acceleration is directly proportional to the radus of curvature It decreases, because the centripetal acceleration is inversely proportional to the radius of the curvature It decreases, because the centripetal acceleration is directly proportional to the radius of the curvature

19. What happens to centripetal acceleration as the radius of curvature decreases and the speed is constant, and why? It increases, because the centripetal acceleration is inversely proportional to the radius of the curvature It increases, because the centripetal acceleration is directly proportional to the radus of curvature It decreases, because the centripetal acceleration is inversely proportional to the radius of the curvature It decreases, because the centripetal acceleration is directly proportional to the radius of the curvature

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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1. Consider an object on some trajectory r(t) and define v = r' as the velocity with speed v = [r'|. (a) Show that we can write v = vT. (b) Show that we can write the acceleration as a = arT + anN where ar and an are the tangential and normal acceleration components that are func- tions of the speed and curvature. Explain why an object with constant speed can still experience an acceleration. (c) Consider a trajectory r(t) = (t² – 1,t – t³). Compute the curvature as well as the tangential and normal components of the acceleration.
9.) Please help with equation, gravity is g=32.2 ft/sec^2 or g=9.81 m/sec^2
8. How is it possible that a body moves at a constant speed and is still in accelerating motion? 9. When a car is going around a circular track with constant speed, what provides the centripetal force necessary for circular motion?
5. Determine the source of centripetal force in the following examples. a. Earth orbiting around the sun. b. Car moving along a circular track. c. Bucket attached to a rope, spun in a horizontal circle.
20. Which of the following is the correct order of centripetal accelerations of satellites A, B, and C orbiting Earth (D) with equal velocities as shown in the figure?
1. In an experiment to discover the effect of centripetal force on velocity, an object of mass m was swung on the end of a string in a horizontal circular path of radius r. F = mv²ir [Equation 1] F = mv/r The string tension provided the centripetal force Fthat produced the centripetal acceleration and kept the object revolving in its circular path. The centripetal force was determined by using a spring scale or force sensor that measured the tension on the string. By timing the revolutions and calculating the distance traveled by the object, the velocity v of the object was determined.
A 0.05 kg golf ball moves in a circle with a radius of 2.3 m at a constant speed of 4 m/s. The centripetal acceleration is m/s². 201²
A car has an acceleration of 2 m/s/s as it moves in a circle. What is its velocity if the circle has a radius of 17m? * 2 m/s/ 5.8 m/s 17 m/s 60 m/s
Q.22 :- A car moves on a flat circular track of 200 m radius with a constant speed of 20 if the car weighs 400 kg, what is the centripetal force acting on the car ?
1. In an experiment to discover the effect of centripetal force on velocity, an object of mass m was swung on the end of a string in a horizontal circular path of radius r. F = mv²ir [Equation 1] F = mv/r The string tension provided the centripetal force Fthat produced the centripetal acceleration and kept the object revolving in its circular path. The centripetal force was determined by using a spring scale or force sensor that measured the tension on the string. By timing the revolutions and calculating the distance traveled by the object, the velocity v of the object was determined.
26- In how many seconds does an object moving with a centripetal acceleration of 16 m/s on a circular orbit with a radius of 4 m take one revolution? (n=3) A) 1 B) 2 C) 5 D) 3 E) 4
8. We know that acceleration represents a change in velocity. If speed is constant in UCM, what aspect of the velocity is changing as an object experiences centripetal acceleration?