Determine minimum value of weigh to cause motion:

Determine minimum value of weight W required to cause motion of block, which rests on a horizontal plane. The block weighs 300N and coefficient of friction between block and plane is 0.6. Angle of warp over pulley is 90º and coefficient of friction between pulley and rope is 0.3.

 

Sol: As the weight W impend vertical motion in down ward direction, the tension in two sides of the pulley will be as shown in figure given below

Given date:

T₁  = W, µ = 0.3, θ = 90° = p/₂ rad

Using relation of Ratio of belt tension, T₁/T₂  = e^µ.θ

                                                                                                                                                      ...(i)

Considering equilibrium of block:

ΣV = 0

R = 300N                                                                                                                             ...(ii)

ΣH = 0

T₂  = µR = 0.3 × 300 = 180N                                                                                        ...(iii)

By equating the equation (i) and (iii), we get

W  = 1.6 × 180

W = 288N                                                                      .......ANS

Posted Date: 10/18/2012 8:29:46 AM | Location : United States

Ask an Expert

Related Discussions:- Determine minimum value of weigh to cause motion, Assignment Help, Ask Question on Determine minimum value of weigh to cause motion, Get Answer, Expert's Help, Determine minimum value of weigh to cause motion Discussions

Write discussion on Determine minimum value of weigh to cause motion
Your posts are moderated

Write your message here..

Related Questions

T section load with udl, how to solve t -section with udl how to solve t -section with udl

Determine the force, Determine the force: Determine the force P needed... Determine the force: Determine the force P needed to start block B illustrated in Figure moving to the right if the coefficient of friction is 0.3 for all surfaces of contact.

Belts and drive s, Types of belts and drive Types of belts and drive

Process of polymerization, Q. Process of polymerization? The process of... Q. Process of polymerization? The process of linking together of monomers, that is, of obtaining macromolecules is called "polymerization". It can be achieved by one of the two

Bench vices tool and equipment , Bench Vices: Bench vice is used to hold a... Bench Vices: Bench vice is used to hold a job on a bench. It consists of a movable jaw, a fixed jaw, spindle and a lever. Figure shows a bench vice. The movable jaw is in the fron

Rankine Cycle, In a nuclear power plant saturated steam at 30 bar enters a ... In a nuclear power plant saturated steam at 30 bar enters a h.p. turbine and expands isentrophically to a pressure at which its quality is 0.841. At this pressure the steam is pass

MECHANICS, CLOSED CIOL HELICAL ,WIRE DAI 10MM AND COMLITE10 TURNS WITH MEAN... CLOSED CIOL HELICAL ,WIRE DAI 10MM AND COMLITE10 TURNS WITH MEAN RADIOUS AND AXIAL LOAD 200N ,C=80KN/MM2.FIND DIFLECTION OF SPRING?

Roller spot welding, Roller Spot Welding In this process, a series of ... Roller Spot Welding In this process, a series of intermittent spot welds are made using wheels or rollers as electrodes. The rollers are power driven and are stopped while ind

Quasistatic loading, • For the ASTM dogbone specimens, the ¾ inch hole spec... • For the ASTM dogbone specimens, the ¾ inch hole specimens, and the notched specimen tabulate the failure load, in pounds. • Show plots of stress and strain for all specimens w

Objectives of motorcycle repairing , Objectives: After studying this unit ... Objectives: After studying this unit and subsequent practicing, you should be able to acquire the skills required for troubleshooting of a motorcycle and identify different