/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 14 Blocks A and B in the figure are... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 7: Q. 14 (page 176)

Blocks A and B in the figure are connected by a massless string over a massless, frictionless pulley. The blocks have just been released from rest. Will the pulley rotate clockwise, counterclockwise, or not at all? Explain.

Short Answer

Expert verified

The pulley would not rotate at all.

Step by step solution

01

Given information

Blocks A and B in the figure are connected by a massless string over a massless, frictionless pulley.

02

Calculation

Here, the mass of both the block is 1kg,so there will be an equal force on both the sides of the pulley and to rotate the pulley, there must be a torque applied on the pulley.

The net torque on the pulley is given as:-

蟿=F2-F1脳r=F2-F2脳r鈭�F1=F2=0

Here r is the radius of the pulley and F1and F2are two forces acting on either side of pulley .

Thus, there will be no torque on the pulley and the pulley would not rotate at all.

03

Final answer

There will be no torque on the pulley and it wouldn't rotate at all.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

In case a, in the figure block A is accelerated across a frictionless table by a hanging 10Nweight (1.02kg). In case b, block A is accelerated across a frictionless table by a steady 10Ntension in the string. The string is massless, and the pulley is massless and frictionless. Is A鈥檚 acceleration in case b greater than, less than, or equal to its acceleration in case a? Explain.

The sled dog in the figure drags sleds A and B across the snow. The coefficient of friction between the sleds and the snow is 0.10.If the tension in rope 1is150N,what is the tension in rope 2?

The cable cars in San Francisco are pulled along their tracks by an underground steel cable that moves along at 9.5mph.The cable is driven by large motors at a central power station and extends, via an intricate pulley arrangement, for several miles beneath the city streets. The length of a cable stretches by up to 100ftduring its lifetime. To keep the tension constant, the cable passes around a 1.5mdiameter 鈥渢ensioning pulley鈥� that rolls back and forth on rails, as shown inFIGURE100ft. A 2000kgblock is attached to the tensioning pulley鈥檚 cart, via a rope and pulley, and is suspended in a deep hole. What is the tension in the cable car鈥檚 cable?

The hand in the figure is pushing on the back of block A. Blocks A and B, with mb>maare connected by a massless string and slide on a frictionless surface. Is the force of the string on B larger than, smaller than, or equal to the force of the hand on A? Explain.

The two blocks in FIGUREP7.34are sliding down the incline. What is the tension in the massless string?
See all solutions

Recommended explanations on Physics Textbooks

Mechanics and Materials

Read Explanation

Fields in Physics

Read Explanation

Engineering Physics

Read Explanation

Quantum Physics

Read Explanation

Electrostatics

Read Explanation

Turning Points in Physics

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.