Determine weight of body and coefficient of the friction, Mechanical Engineering

Determine weight of body and coefficient of the friction:

Force of 200N is needed just to move a certain body up an inclined plane of angle 15°, the force is parallel to the plane. If the angle of indication is 20º the effort again required parallel to the plane is found 250N. Determine weight of body and coefficient of the friction.

909_Determine weight of body and coefficient of the friction.png



Consider When slope of the plane is 15º Sum of forces parallel to the plane = 0

P - µR - Wsin15° = 0                                                                                                                                      ...(i)

Sum of forces perpendicular to the plane = 0

R = Wcos15°                                                                                                                       ...(ii)

By putting the value of equation (ii) in (i), We get

P = µWcos15° + Wsin15° = 0

200 = 0.96µW + 0.25W                                                                                                      ...(iii)


Consider When slope of plane be 20º
The Sum of forces parallel to the plane = 0

P - µR - Wsin20° = 0                                                                                                                                   ...(iv)

The Sum of forces perpendicular to plane = 0

R = Wcos20°                                                                                                                       ...(v)

By p­utting the value of equation(v) in (iv), We get

P = µWcos20° + Wsin20° = 0

250 = 0.939µW + 0.34W                                                                                                    ...(vi)

Solved equation (iii) and (vi) we get

W = 623.6N and µ = 0.06                                                        .......ANS

Posted Date: 10/18/2012 2:31:03 AM | Location : United States

Related Discussions:- Determine weight of body and coefficient of the friction, Assignment Help, Ask Question on Determine weight of body and coefficient of the friction, Get Answer, Expert's Help, Determine weight of body and coefficient of the friction Discussions

Write discussion on Determine weight of body and coefficient of the friction
Your posts are moderated
Related Questions
Applications of seam welding Lap seam welding is used for the manufacture of cans, buckets and water tanks and for welding thin walled large diameter pipes. Mash seam welding

Explain the End Cutting Edge Angle It is an angle between the face of the tool and the plane perpendicular to side of shank. It acts as relief angle that is allows only small s

State the types of foundations We saw the different types of foundations commonly adopted for specific situation. In actual practice the situations are not very simple both in

Under the action of constant force, a 2kg block moves such that its position x as a function of time is given by X=t^3/3 ,where x in meters and t in sec , the workdone by force in

Q. Factors in the design of high temperature materials? There is typically little correlation between room temperature strength and high temperature strength of creep-resistant

Q. Hot Service Insluation Thicknesses? Hot Service Insluation Thicknesses are specified based on the following design criteria: • Average Annual Climatic Conditions:

impact on the technological & industrial development

Inertia : The clutch rotating part should have minimum inertia. Otherwise, when the clutch is released for gear changing, the clutch plate will keep on spinning, causing hard shif

The crank shaft of a high speed pump has a parallel shaft of 2.5 cm diameter and 48 cm in length. It carries three eccentrics each of 6 cm in diameter and uniform thickness of 1.8

List out the Types of fixtures? Milling fixtures Lathe fixtures. Grinding fixtures Broaching fixtures Assembly fixtures Inspection fixtures Boring f