Force required to start the roller, Mechanical Engineering

Assignment Help:

Force required to start the roller:

A roller shown in the figure given below is of mass 150Kg. What force T is required to start the roller over block A?

Sol.: Let R be reaction given by block to the roller, and is to act at point A subtends an angle of ? as shown in the figure given below,

For finding angle θ  ,

Sin θ  = 75/175 = 0.428

= 25.37°

Apply lami's theorem at 'A', as the body is in equilibrium

T/sin(90° + 25.37°) = 150 × g/ sin(64.63° + 65°)

T = [150 × g × sin(90° + 25.37°)]/ sin(64.63° + 65°)

T = 1726.33N

 

854_Force required to start the roller.png

 


Related Discussions:- Force required to start the roller

Design pressure of vessels, Q. Design pressure of Vessels? The design p...

Q. Design pressure of Vessels? The design pressure shall be as specified on the Vessel Data Sheet. The design pressure for a vessel in vacuum service shall be full vacuum (1

Define strain, Define strain: Sol. : STRAIN(e) : When the body is sub...

Define strain: Sol. : STRAIN(e) : When the body is subjected to some external force, there is some change in dimension of body. The ratio between change in the dimension of b

Evaluate the normal and tangential stresses, Evaluate the normal and tangen...

Evaluate the normal and tangential stresses: Q. 20: At the point in stressed body, the principal stresses are σ x = 80 kN/m 2 and σ y = 40  kN/m 2 . Determine the norma

Benefits of cad, Quality Improvement : CAD can improve the quality of eng...

Quality Improvement : CAD can improve the quality of engineering design by increasing the efficiency and effectiveness of the designers. This can be observed with excellent

Physical properties of materials, why is physical properties of materials i...

why is physical properties of materials important in design and for industrial application?

What is blow molding, Q. What is Blow molding ? Blow molding has been u...

Q. What is Blow molding ? Blow molding has been used for making plastic bottles, toys, doll bodies and many other items. The blow molding commences with the extrusion of the t

Discover the fixing torques set up at the ends of the shaft, Discover the f...

Discover the fixing torques set up at the ends of the shaft: A solid shaft 6.5 m long is securely fixed at each of the end. A torque of 91 Nm is applied to the shaft at a sect

Ratio of applied stress and yield stress, Ratio of applied stress and yield...

Ratio of applied stress and yield stress: What should be the ratio of applied stress, s, to yield stress s Y in a large thin plate so that plastic spread along lint of crack

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