Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 9: Q10MCQ (page 230)

A rubber band is stretched by 1.0 cm when a force of 0.35 N is applied to each end. If instead a force of 0.70 N is applied to each end, estimate how far the rubber band will stretch from its unstretched length: (a) 0.25 cm. (b) 0.5 cm. (c) 1.0 cm. (d) 2.0 cm. (e) 4.0 cm.

Short Answer

Expert verified

The correct option is (d).

Step by step solution

01

Concept

The stress is proportional to the strain on an elastic body.For this problem, stress gets double; then, the strain will double.

02

Explanation

Here, the initial stress on the rubber band is 0.35 N.

The initial strain is 1.0 cm.

The final stress on the rubber band is 0.70 N.

For any elastic body, the stress is proportional to the strain on the body.

Here, the stress on the rubber band is doubled, then the strain will also be doubled. Therefore, the rubber band will stretch by 2.0 cm from the upstretched length.

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

(III) A door 2.30 m high and 1.30 m wide has a mass of 13.0 kg. A hinge 0.40 m from the top and another hinge 0.40 m from the bottom each support half the door’s weight (Fig. 9–69). Assume that the center of gravity is at the geometrical center of the door, and determine the horizontal and vertical force components exerted by each hinge on the door.

Three children are trying to balance on a seesaw, which includes a fulcrum rock acting as a pivot at the center and a very light board that is 3.2 m long (Fig. 9–57). Two playmates are already on either end. Boy A has a mass of 45 kg, and boy B has a mass of 35 kg. Where should girl C, whose mass is 25 kg, place herself to balance the seesaw?

(II) Calculate\({F_{\rm{A}}}\)and\({F_{\rm{B}}}\)for the uniform cantilever shown in Fig. 9–9 whose mass is 1200 kg.

A 23.0-kg backpack is suspended midway between two trees by a light cord as in Fig. 9–51. A bear grabs the backpack and pulls vertically downward with a constant force, so that each section of cord makes an angle of 27° below the horizontal. Initially, without the bear pulling, the angle was 15°; the tension in the cord with the bear pulling is double what it was when he was not. Calculate the force the bear is exerting on the backpack.

(III) You are on a pirate ship and being forced to walk the plank (Fig. 9–68). You are standing at the point marked C. The plank is nailed onto the deck at point A, and rests on the support 0.75 m away from A. The center of mass of the uniform plank is located at point B. Your mass is 65 kg and the mass of the plank is 45 kg. What is the minimum downward force the nails must exert on the plank to hold it in place?
See all solutions

Recommended explanations on Physics Textbooks

Mechanics and Materials

Read Explanation

Circular Motion and Gravitation

Read Explanation

Scientific Method Physics

Read Explanation

Measurements

Read Explanation

Thermodynamics

Read Explanation

Radiation

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