Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 9: Q9-2Q (page 230)

A bungee jumper momentarily comes to rest at the bottom of the dive before he springs back upward. At that moment, is the bungee jumper in equilibrium? Explain.

Short Answer

Expert verified

Yes, the bungee jumper is in equilibrium.

Step by step solution

01

Meaning of equilibrium

Equilibrium may be described as the situation in which the forces acting in opposite directions are perfectly balanced so that there is no tendency to change.

In this situation, the value of the net force working on the system is equivalent to zero.

02

Explanation for the equilibrium state of a bungee jumper

The bungee jumper is in equilibrium at the bottom of the dive because his weight acting vertically downward is balanced by the tension in the ropes on either side of him.

If he was not in equilibrium, he would have either come down if his weight was greater, or gone up if the tension was larger than his weight. As his body continues to be at rest, he is supposed to be in a state of equilibrium.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Your doctor’s scale has arms on which weights slide to counter your weight, Fig. 9–35. These weights are much lighter than you are. How does this work?

(II) A uniform steel beam has a mass of 940 kg. On it is resting half of an identical beam, as shown in Fig. 9–60. What is the vertical support force at each end?

(II) A 0.75-kg sheet is centered on a clothesline as shown in Fig. 9–63. The clothesline on either side of the hanging sheet makes an angle of 3.5° with the horizontal. Calculate the tension in the clothesline (ignore its mass) on either side of the sheet. Why is the tension so much greater than the weight of the sheet?

(II) An iron bolt is used to connect two iron plates together. The bolt must withstand a shear force of up to about 3300 N. Calculate the minimum diameter for the bolt based on a safety factor of 7.0.

(I) Suppose the point of insertion of the biceps muscle into the lower arm shown in Fig. 9–13a (Example 9–8) is 6.0 cm instead of 5.0 cm; how much mass could the person hold with a muscle exertion of 450 N?
See all solutions

Recommended explanations on Physics Textbooks

Electromagnetism

Read Explanation

Physics of Motion

Read Explanation

Fields in Physics

Read Explanation

Radiation

Read Explanation

Oscillations

Read Explanation

Thermodynamics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free