Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

Hip wear on the moon. (a) Use data from Appendix E to calculate the acceleration due to gravity on the moon. (b) Calculate the friction force on a walking 65 kg astronaut carrying a 43 kg instrument pack on the moon if the coefficient of kinetic friction at her hip joint is $0.0050 .$ (If necessary, see problem 32 in Chapter 5 and recall that approximately 65$\%$ of the body weight is above the hip.) (c) What would be the friction force on earth for this astronaut?

92 $\mathrm{km}$

Physics 101 Mechanics

Chapter 6

Circular Motion and Gravitatio

Physics Basics

Motion Along a Straight Line

Motion in 2d or 3d

Newton's Laws of Motion

Applying Newton's Laws

University of Sheffield

University of Winnipeg

McMaster University

Lectures

04:34

In physics, kinematics is the description of the motion of objects and systems in the frame of reference defined by the observer. An observer has to be specified, otherwise the term is meaningless.

04:16

In mathematics, a proof is a sequence of statements given to explain how a conclusion is derived from premises known or assumed to be true. The proof attempts to demonstrate that the conclusion is a logical consequence of the premises, and is one of the most important goals of mathematics.

03:34

Hip wear on the moon. (a) …

10:41

Hip Wear on the Moon. (a) …

02:35

(a) Use astronomical data …

05:55

Assume that the moon orbit…

05:11

Review Conceptual Example…

06:45

Using the masses and mean …

03:53

(a) Calculate $g_{0}$ on t…

13:13

Calculate the magnitude an…

01:39

Review Conceptual Example …

07:25

An astronaut stands at a p…

03:48

Imagine that a 60 -kg astr…

04:12

Use data for the Moon'…

02:58

Okay, so two first calculated the acceleration on moon. We need to see what's given there. So first of all, we're given the mass of the moon from Appendix E. So from appendix E, we get the mass of the moon and then we get three radius of the moon. And since we know that the 65% of the body weight is above him so that means thumb and supported by hip will be 65% off the total mass, which is 65 kg and then, ah, since issues carrying 43 kilograms of weight. So we add to that that's the total amount of mass which is tainted by 0.25 kids see that she has on now to calculate the gravitation exploration on the person. We will be using this equation where Jesus gravitational, constant and some m is the mass of the moon and then are seldom squared is thie. So this is ah, ours of them squared and that's the radius of the moon squared. So if we plug in the numbers, we see that the acceleration on moon is 1.62 made over seconds squared no, and part B and party. We need to find out the frictional force. And to do so, we're already given the coefficient of friction for ah, you have for moon and for art. And ah, we know that a friction force is nothing but the multiplication between coefficient of friction and the normal force that's acting on the person s o. The normal force is master's gravity. And since we've already figured out that the told masses 85.25 kilograms so we can want to play that to the gravitation accession on moon for Moon case and that's ah, that gives us 1 38 Newton's as thie normal force on the moon. So we multiply that with the coefficient of friction. And that gives us 0.69 Newton for defection for someone and similarly for we just need to change the gravitation acceleration. And for art, it's 9.8, so we can use that number. So it's 9.8 me never second square. So if you want to play 85.25 with 9.8, we get 8 35 Newton and ah again by similar can't buy doing the similar calculation we see they're the normal force on Earth is 4.2 Newman. Sorry way. See that The friction force on art is four point to anything. Thank you.

View More Answers From This Book

Find Another Textbook

Numerade Educator

05:24

A batted baseball leaves the bat at an angle of $30.0^{\circ}$ above the hor…

02:14

\cdots An airplane is flying with a velocity of 90.0 $\mathrm{m} / \mathrm{s…

04:33

$\bullet$ An astronaut in space cannot use a scale or balance to weigh objec…

02:56

$\bullet$ Three forces are applied to a wheel of radius $0.350 \mathrm{m},$ …

02:26

$\bullet$ (a) If the amplitude in a sound wave is doubled, by whatfactor…

06:16

$\bullet$$\bullet$ A flask contains a mixture of neon (Ne), krypton (Kr), an…

01:55

$\bullet$ Use the formulas of Table 9.2 to find the moment of iner-tia a…

05:33

$\bullet$ On an air track, a 400.0 g glider moving to the right at 2.00 $\ma…

07:30

$\bullet$ $\bullet$ Human energy vs. insect energy. For its size, the com-

02:47

Assuming the alveoli are spherical, what is the diameter of a typical alveol…