Example of wedge friction, Mechanical Engineering

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

Posted Date: 10/18/2012 2:52:58 AM | Location : United States

Related Discussions:- Example of wedge friction, Assignment Help, Ask Question on Example of wedge friction, Get Answer, Expert's Help, Example of wedge friction Discussions

Write discussion on Example of wedge friction
Your posts are moderated
Related Questions
A modified NRZ code known as enhanced-NRZ (E-NRZ) operates on 7-bit words; inverting bits 2,3,6 and 7; and adding one parity bit to each word. The parity bit is chosen to make the

what are the necessery calculation required to design a gripper?

Q. Conceptual engineering phase? During this phase, a conceptual engineering estimate will be prepared by Project Management with input from all disciplines. Activities at t

Explain Gear Milling Milling is a form-cutting process limited to making single gears for prototype or very small batches of gears as it is a very slow and uneconomical method

An engine repair workshop in County Durham has identified a need  for a winch which is  to lift complete engine assemblies from floor level up to workbench level  to allow  remedia

Die Press Assembly Drawing The objective of this assignment is to demonstrate the following concepts of design. • Extrude • Revolve • Fillet • Dimensioning • Tolerance • Bas

Computer added design Using SolidWorks create an assembly model of the roller, bracket and base shown to the right. The assembly is also shown in exploded view below. You may c

(a) A member ABC is formed by connecting a steel bar of 20mm diameter to an aluminium bar of 30 mm diameter, and is subjected to forces as shown in figure. Evaluate the total defor