1. A ball with a mass of 10 kg is hanging from a long string that is tied to the ceiling of a train car traveling eastward on horizontal tracks. An observer inside the train car sees the ball hang motionless. Draw a clearly labeled free-body diagram for the ball if (a) the train has a uniform velocity, and (b) the train is speeding up uniformly. (c) Is the net force on the ball zero in either case? Explain. (d) If the train stops from 60 km/h velocity within 5 s, draw a clearly labeled free-body diagram for the ball and compute for the tensional force on the string (assumes that the string didn’t break).
1. A ball with a mass of 10 kg is hanging from a long string that is tied to the ceiling of a train car traveling eastward on horizontal tracks. An observer inside the train car sees the ball hang motionless. Draw a clearly labeled free-body diagram for the ball if (a) the train has a uniform velocity, and (b) the train is speeding up uniformly. (c) Is the net force on the ball zero in either case? Explain. (d) If the train stops from 60 km/h velocity within 5 s, draw a clearly labeled free-body diagram for the ball and compute for the tensional force on the string (assumes that the string didn’t break).
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. A ball with a mass of 10 kg is hanging from a long string that is tied to the ceiling of a
train car traveling eastward on horizontal tracks. An observer inside the train car sees
the ball hang motionless. Draw a clearly labeled free-body diagram for the ball if (a) the
train has a uniform velocity, and (b) the train is speeding up uniformly. (c) Is the net
force on the ball zero in either case? Explain. (d) If the train stops from 60 km/h velocity
within 5 s, draw a clearly labeled free-body diagram for the ball and compute for the
tensional force on the string (assumes that the string didn’t break).
Transcribed Image Text:Qwer
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