3/23 The 142-g pinewood-derby car is released from rest at the starting line A and crosses the finish line C 2.75 s later. The transition at B is small and smooth. Assume that the net retarding force is con- stant throughout the run and find this force. 20° A C В 3 m 4.5 m
3/23 The 142-g pinewood-derby car is released from rest at the starting line A and crosses the finish line C 2.75 s later. The transition at B is small and smooth. Assume that the net retarding force is con- stant throughout the run and find this force. 20° A C В 3 m 4.5 m
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.89RP: The woman is trying to move the crate of weight W by pulling on the rope at the angle to the...
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Question
The 5-oz pinewood-derby car is released from rest
at the starting line A and crosses the fi nish line
C 2.75 sec later. The transition at B is small and
smooth. Assume that the net retarding force is constant throughout the run and find this force
![3/23 The 142-g pinewood-derby car is released from
rest at the starting line A and crosses the finish
line C 2.75 s later. The transition at B is small and
smooth. Assume that the net retarding force is con-
stant throughout the run and find this force.
20°
A
C
В
3 m
4.5 m](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F572167ca-e702-4491-b3e4-fca6bddb6723%2F6d6c1c44-31a8-4f3e-a75c-8bf9befc309e%2F718w6p.png&w=3840&q=75)
Transcribed Image Text:3/23 The 142-g pinewood-derby car is released from
rest at the starting line A and crosses the finish
line C 2.75 s later. The transition at B is small and
smooth. Assume that the net retarding force is con-
stant throughout the run and find this force.
20°
A
C
В
3 m
4.5 m
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