Answered: A man pulls a 50.0-kg block of ice with…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 28CQ: Mechanisms of Heat Transfer What are the main methods of heat transfer from the hot core of Earth to...

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Question

A man pulls a 50.0-kg block of ice with a rope over his shoulder as shown below.
Suppose that he applies just enough force to get the block moving and then he continues to apply
the same force. If it takes 2.00 seconds for the block to move 3.00 meters and if the coefficient of
kinetic friction between the block and the surface is ?? =0.100, determine the coefficient of static
friction ?? between the block and the surface. You may assume that the acceleration of the block
is constant.

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$\begin{array}{l} G i v e n : \\ m a s s o f i c e b l o c k, m = 50.0 k g \\ a n g l e m a d e b y e x t e r n a l f o r c e w i t h h o r i z o n t a l, θ = 25^{o} \\ i t t a k e s t = 2.0 s t o m o v e d = 3.00 m \\ k i n e t i c f r i c t i o n c o e f f, μ_{k} = 0.100 \\ a c c e l e r a t i o n i s c o n s t a n t t h r o u g h o u t t h e m o t i o n . \\ A s k e d : \\ T o f i n d t h e c o e f f o f s t a t i c f r i c t i o n, μ_{s} = ? \end{array}$

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