×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide

You are a member of an Alpine Rescue Team. You must

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 21E Chapter 6

University Physics | 13th Edition

  • Textbook Solutions
  • 2901 Step-by-step solutions solved by professors and subject experts
  • Get 24/7 help from StudySoup virtual teaching assistants
University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

4 5 1 362 Reviews
16
1
Problem 21E

You are a member of an Alpine Rescue Team. You must project a box of supplies up an incline of constant slope angle a so that it reaches a stranded skier who is a vertical distance h above the bottom of the incline. The incline is slippery, but there is some friction present, with kinetic friction coefficient µk. Use the work–energy theorem to calculate the minimum speed you must give the box at the bottom of the incline so that it will reach the skier. Express your answer in terms of g, h, µk, and ?.

Step-by-Step Solution:

Solution 21E Step 1: The diagram below shows the innards of the problem clearly. Step 2: The work energy theorem tells that, The difference between final and initial kinetic energy is the work done. So, K.E final K.E initialW 0 1/2 mv = work done by gravity + work done by friction. 1/2 mv = W + W ---------------------(1) G F So, let’s calculate the work done by the gravitational force first. Step 3: Here the angle between the gravitational force and the displacement of the box is 90 degree. So, the work done will be, W = F . d = F d cos (90 + ) G G G = mgd × ( sin ) = mgd sin ------------------------(2)

Step 4 of 6

Chapter 6, Problem 21E is Solved
Step 5 of 6

Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

Unlock Textbook Solution

Enter your email below to unlock your verified solution to:

You are a member of an Alpine Rescue Team. You must

×
Log in to StudySoup
Get Full Access to Physics - Textbook Survival Guide
Join StudySoup for FREE
Get Full Access to Physics - Textbook Survival Guide
×
Reset your password