Example of wedge friction, Mechanical Engineering

Assignment Help:

Example of Wedge friction:

Two blocks A and B are employed to raise load of 2000 N resting on another block C by the application of force P as shown in the figure given below. Neglecting weights of wedge blocks and assuming co efficient of friction µ = 0.25 for all surfaces, determine value of P for impending upward motion of block C.

Sol.: The block C, under action of forces P on blocks A and B, tends to move upward. Thus the frictional forces will act downward. 

tanφ= µ = 0.25 (given),

 

87_Example of Wedge friction.png

 

where φ is angle of friction φ= 14°

Consider equilibrium of block C :

1630_Example of Wedge friction1.png

635_Example of Wedge friction2.png

It is acted upon by following forces :
(i) Load 2000 N,

(ii) Total reaction RA offered by the wedge block A, and (iii) Total reaction RB  offered by the wedge block B. By using Lami's theorem, we obtain

Consider equilibrium of block A:

It is acted upon by the following forces: (i) Force P,

(ii) RA  (from block C), and

(iii) Total reaction R that isoffered by horizontal surface.

1160_Example of Wedge friction3.png

Using Lami’s theorem, we have

529_Example of Wedge friction4.png


Related Discussions:- Example of wedge friction

Explain general phase of radial drilling machine, General Phase of Radial D...

General Phase of Radial Drilling Machine Steps- 1. Prepare a strong foundation for the value study. In radial drilling machine hole can not be produce in any angle.

Define economics order quantity, a) Define Economics Order Quantity. Derive...

a) Define Economics Order Quantity. Derive, using neat diagram, the mathematical formula for economic order quantity. b) The purchase manager of an industrial unit is placing on

Types of coated electrodes-iron powder electrodes, Iron Powder Electrodes ...

Iron Powder Electrodes Iron powder is a widely used covering ingredient. It is incorporated in certain coverings to the extent of one half of the total weight. Iron Powder impart

Combined rules- priority rules-conventional priority rules, Combined Rules ...

Combined Rules           MOD (modified operation due date)                                 PN j = max (t + o j , t dj ) (SPT-Tr) (Truncated SPT)

Cam-follower, which software can model the conjugate cams-follower?

which software can model the conjugate cams-follower?

Solved numarical, The following observations were made during a tensile tes...

The following observations were made during a tensile test on mild steel specimen 60 mm in diameter and X mm long. Elongation with 50 KN load (within the limit of proportionality)

Blasting abrasive, Blasting Abrasive: Sand had been use widely before ...

Blasting Abrasive: Sand had been use widely before new abrasive media invented. Today, manufacturer had more choices and better options in choosing blasting media for their ow

How can you determine velocity by electromagnetic method, Q. How can you de...

Q. How can you determine velocity by electromagnetic method? In electromagnetic method, a magnetic field is generated by the electric current flowing through a coil fixed below

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