Evaluate force to slide the body over the surface, Mechanical Engineering

Evaluate Force to slide the body over the surface:

A body having weight 100N rests on rough horizontal surface (µ = 0.3) and is acted upon by a force applied at an angle of 300 to the horizontal. What force is required to just make the body to slide over the surface?

Sol.: In limiting equilibrium, the forces are balanced.

 

388_Evaluate Force to slide the body over the surface.png

∑H = 0;

F = cosθ

∑V = 0;

R = W - Psinθ

Also                        F = µR

P.cos θ  = µ(W- P.sinθ  )

P.cosθ   = µ.W- µ.P.sinθ

µ.P.sinθ  + P.cosθ   = µ.W

P(µ.sinθ    + cos θ ) = µ.W

P = µ.W/(Cosθ   + µ.sinθ )

= 0.3× 100 / (Cos30° + 0.3sin30°)

= 29.53N                                                  .......Ans

Posted Date: 10/17/2012 6:33:37 AM | Location : United States







Related Discussions:- Evaluate force to slide the body over the surface, Assignment Help, Ask Question on Evaluate force to slide the body over the surface, Get Answer, Expert's Help, Evaluate force to slide the body over the surface Discussions

Write discussion on Evaluate force to slide the body over the surface
Your posts are moderated
Related Questions

Q. Purpose of Corrosion assessment design? The purpose of this design guide is to ensure that Material Selection for Steam Assisted Gravity Drainage (SAGD) projects is carried

Cross Belt Drive: When shafts are rotating in the opposite direction, cross belt drive can be obtained. Figure In the diagram given to us pulley 'A' is called as

Q. Describe Elastic and plastic deformation? When a sufficient load is applied to a metal or other structural material, it will cause the material to change shape. This chang

Determine the force: Determine the force P needed to start block B illustrated in Figure moving to the right if the coefficient of friction is 0.3 for all surfaces of contact.


Explain construction and working of Rope Brake Dynamometer? Determine Power also ?

Q. Flange Facing and Surface Finish? Raised face flange facings are preferred. Flat face flanges to be used only when mating with like equipment (fabricated from brittle mat


Necessity of Battery To obtain power for ignition system. To obtain power for lighting. To obtain power for horn. To obtain power for self-starting.