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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Transcribed Image Text:Centripetal force has to be continually changing
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- A car traveling 20 m/s just leaves the road at the top of a hump. The radius of curvature of the hump isarrow_forwardA curved road with radius 80m is perfectly banked with an angle of 20º. The designed speed of the road is A) 16.89 m/s B) 285.35 m/s C) 29.12 m/s D) 5.4 m/s B O A ос Darrow_forwardA child sitting 1.90 m from the center of a merry-go-round moves with a speed of 2.15 m/s - Calculate the centripetal acceleration of the child. - Calculate the net horizontal force exerted on the child. (mass = 34.5 kg)arrow_forward
- A snowboarder drops from rest into a halfpipe of radius R and slides down its frictionless surface to the bottom (see the figure below). Show that (a) the snowboarder's speed at the bottom of the halfpipe is v = V 2gR, (b) the snowboarder's centripetal acceleration at the bottom is a, = 2g, and (c) the normal force on the snowboarder at the bottom of the halfpipe has magnitude 3mg.arrow_forwardA railroad curve is laid out on a circle. What radius should be used if the track is to change direction by 20° in a distance of 100 miles? Round your answer to the nearest mile.arrow_forwardCentripetal Force: I'm trying to understand the forces at work in centripital force, i understand that if an object is moving in a circle then their must be a net inward acceleration. So if centripetal force is what is pushing in on the object toward the center of the circle, then what is pushing outward to counteract this force and hold the object in its rotation? Like a tenis ball on a string, if i swing it and it gain an inward force, then as it swings under that logic it would approach my hand. What is pushing it out?arrow_forward
- Ali is running in a circular race track of radius 2 m with a speed of 1 m/s. If the mass of Ali is 89 Kg then find the centripetal force. 10N 178N 356N 45N Please I need a surely answer and a quicker responsearrow_forwardWhile coasting on your bike, you make a 90 degrees turn by traveling along a quarter-circle arc. Did you accelerate while you turned? If so, in which direction did you accelerate?arrow_forward
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