Determine minimum value of weigh to cause motion, Mechanical Engineering

Assignment Help:

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.

 

726_Determine minimum value of weigh to cause motion.png

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  = eµ.θ

            684_Determine minimum value of weigh to cause motion1.png                                                                                                                                          ...(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


Related Discussions:- Determine minimum value of weigh to cause motion

Plastic material and rigid plastic material, Plastic material and rigid pla...

Plastic material and rigid plastic material: For the plastic material, there is stress at which plastic deformation begins. A rigid plastic material is one in which the ela

Steam hot service insluation thicknesses, Q. Steam Hot Service Insluation T...

Q. Steam Hot Service Insluation Thicknesses? Steam Hot Service Insluation Thicknesses are specified based on the following design criteria: Average Annual Climatic Condi

Objectives of motorcycle servicing , Objectives After studyingmotercyc...

Objectives After studyingmotercycle servicing, you should be able to appreciate the importance of regular servicing and maintenance of a motorcycle and also to recommen

Fatigue loading on materials, what are the factors that affecting the fatig...

what are the factors that affecting the fatigue behaviour of materials?

What is transfer molding, Q. What is Transfer molding? Transfer molding...

Q. What is Transfer molding? Transfer molding was developed largely to avoid the disadvantages found which compression molding. • Transfer molding can make intricate or quit

Rich mixture-mixture requirement , Rich Mixture: It generally ranges...

Rich Mixture: It generally ranges from approximately 7 : 1 to 13 : 1 proportion of air to fuel by weight. To get a high power rich mixture is required. In fact to start the e

Plate clutch lifter bolts for even tightening, Plate clutch lifter bolts fo...

Plate clutch lifter bolts for even tightening : Reset clutch assembly using plate lifter clutch alignment tool.

Working of davis steering gear process, (a) What do you understand by steer...

(a) What do you understand by steering gear ? Explain with a clean sketch the working of Davis steering gear process. Also show the required equation between wheel base and distanc

Balsa wood truss car design, design a car to be build by balsa wood trusses...

design a car to be build by balsa wood trusses, the car has to be with in a specific dimension, calculations of forces on members and nodes using method of joints need to be done a

Bund and dike capacity, Bund / dike capacity is typically covered by local ...

Bund / dike capacity is typically covered by local codes and regulations, however some general principles for liquid storage compounds are: • The net capacity of a bunded / dik

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd