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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