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

Application of cost-volume-profit relationships, Application of Cost-Volume...

Application of Cost-Volume-Profit Relationships: Quality stores open for 10 hours a day. Company is considering decreasing the store hours through one hour. This shall resul

Tension in the strings - mechanics, Tension in the strings: Sol.: Wh...

Tension in the strings: Sol.: When weight is attached to string then it will be in tension. The diagrams are shown below to describe this particular concept.

Force, System of force

System of force

Explain principle of design of jig and fixture, Explain Principle of Design...

Explain Principle of Design of Jig and Fixture While designing jigs and fixtures following considerations should kept in mind: Reduction of idle time. Rigidity

Indicator diagram and indicated power - thermodynamics, Indicator diagram a...

Indicator diagram and indicated power: An indicated diagram is graph between pressure and volume. The former being taken on the vertical axis and latter on the horizontal axis

Array, sorting order of arra

sorting order of arra

Shielding gas, SHIELDING GAS The primary function of the shielding gas ...

SHIELDING GAS The primary function of the shielding gas is to exclude the atmospheric air from the arc zone. However, the shielding gas has significant influence on the arc cha

Thermodynamics, show that energy is property of system

show that energy is property of system

Determine the spring force, A double shoe brake as shown in the figure is c...

A double shoe brake as shown in the figure is capable of absorbing a torque of 1400 N-m. The diameter of the brake drum is 350mm and the angle of contact of each shoe is 100°. If t

Thermodynamics, what are causes of hotness of a body?

what are causes of hotness of a body?

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