Magnitude and direction of force, Mechanical Engineering

Assignment Help:

Magnitude and direction of force:

Determine magnitude and direction of smallest force P which is required to start the wheel over the block. As shown in the figure.

Sol.: Let the reaction of block be R. The least force P is always perpendicular in reaction R. When the wheel is just on point of movement up, then it loose contact with the inclined plane and reaction at this point becomes zero.

 

1193_magnitude and direction of smallest force.png

Consider ?OMP

OM = 60cm

OP = 60-15 = 45cm

MP = {(OM)2 - (OP)2}1/2

544_magnitude and direction of smallest force1.png

= {3600 - 2025}1/2

= 39.68cm

tan     = MP/OP = 39.68/45,           = 41.400

Using lamis theorem at O

P/sin108.6° = 10/sin90° = R/sin161.4°

P = (10 × sin108.6°)/sin90° =9.4KN Thus smallest force P = 9.4KN


Related Discussions:- Magnitude and direction of force

What are the disadvantages of not washing a motorcycle?, (a) What are the d...

(a) What are the disadvantages of not washing a motorcycle before servicing it? (b) List the parts on which water should not fall directly. (c) Write down the steps for washing and

Stress analysis, Figure shows rough sketch of a selected representative cri...

Figure shows rough sketch of a selected representative critical part of a "Quick Coupler" (of an earth moving equipment) made with cast steel.  You need to perform FEA analysis to

Cast iron, CAST IRON: Cast iron is an important alloy of Fe and C are ...

CAST IRON: Cast iron is an important alloy of Fe and C are mostly employed within industry for its convenience to casting in intricate and superior mechanical properties. Stee

Design and sketch a knuckle joint to transmit a tensile load, Give a genera...

Give a generalized definition of factor of safety. Illustrate the factors responsible for Un-certainities in design necessitating a suitable factor of safety. How is ‘factor of saf

Centerless grinding machine, which type of guideways are used in centerless...

which type of guideways are used in centerless grinding machine? which are the errors find in different guideways?

Causes and remedies of motorcycle problems , CAUSES AND REMEDIES OF MOTORCY...

CAUSES AND REMEDIES OF MOTORCYCLE PROBLEMS  If Engine Overheats Causes of Problem Remedy   Incorrect spark plug make/model

Engfine, how we made parts of engine

how we made parts of engine

Theorem of perpendicular axis, Theore m of perpendicular axis It state...

Theore m of perpendicular axis It states that if I X X and I Y Y   be the M.I. of plane section about the two mutually perpendicular axes meeting at a point. Th

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