A small cart of mass 9 kg slides down from the top of a curved track of unknown length. It first passes a small patch of rough surface, and then it hits a spring of rest length 1.61 m and stops. The spring is also located on a second patch of rough surface. If the spring constant of the spring was 18 N/m, it was compressed from 1.61 m to 0.79 m after the cart had finally stopped, and the velocity of the cart when it first entered the second rough patch was 9 m/s, what was the magnitude of negative work done by friction force from the second rough patch in joules? Use g = 9.8 m/s2 in your calculations and retain your answer to two decimal places.
A small cart of mass 9 kg slides down from the top of a curved track of unknown length. It first passes a small patch of rough surface, and then it hits a spring of rest length 1.61 m and stops. The spring is also located on a second patch of rough surface. If the spring constant of the spring was 18 N/m, it was compressed from 1.61 m to 0.79 m after the cart had finally stopped, and the velocity of the cart when it first entered the second rough patch was 9 m/s, what was the magnitude of negative work done by friction force from the second rough patch in joules? Use g = 9.8 m/s2 in your calculations and retain your answer to two decimal places.
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
Section: Chapter Questions
Problem 71P
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Question
![A small cart of mass 9 kg slides down from the top of a
curved track of unknown length. It first passes a small
patch of rough surface, and then it hits a spring of rest
length 1.61 m and stops. The spring is also located on a
second patch of rough surface. if the spring constant of
the spring was 18 N/m, it was compressed from 1.61
m to 0.79 m after the cart had finally stopped, and the
velocity of the cart when it first entered the second
rough patch was 9 m/s, what was the magnitude of
negative work done by friction force from the second
rough patch in joules? Use g = 9.8 m/s² in your
calculations and retain your answer to two decimal
places.
m
h
k
www
d](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7359a456-ce0f-4c61-91d7-1b7453f0143d%2Fb76dcb73-c244-4e2b-b1b3-1a63e0b09fe0%2Ffkvvxe_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A small cart of mass 9 kg slides down from the top of a
curved track of unknown length. It first passes a small
patch of rough surface, and then it hits a spring of rest
length 1.61 m and stops. The spring is also located on a
second patch of rough surface. if the spring constant of
the spring was 18 N/m, it was compressed from 1.61
m to 0.79 m after the cart had finally stopped, and the
velocity of the cart when it first entered the second
rough patch was 9 m/s, what was the magnitude of
negative work done by friction force from the second
rough patch in joules? Use g = 9.8 m/s² in your
calculations and retain your answer to two decimal
places.
m
h
k
www
d
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