Moment of force, Mechanical Engineering

Moment of Force:

Define Moment of Force? Describe moment center and moment arm. Also classify the moment. Sol.: It is turning effect produced by force, on the body, on which it is acting. The moment of force is equal to the product of force and perpendicular distance of the point about which the moment is needed, and the line of action of force.

The force acting on body causes linear displacement, while the moment causes angular displacement.

2060_force system.png

Figure

If M = Moment

F = Force acting on body, and

L = Perpendicular distance between point about which the moment is needed and the line of action of the force.  Then we can say that M = F.L

The point about which moment is considered is called as Moment Center. And Perpendicular distance of point from line of action of the force is called as moment Arm.

2142_force system1.png

 

Figure

 

The moment is of two types: Clockwise moment:

It is moment of a force, whose effect is to turn or rotate the body, in clockwise direction. It takes positive.

1250_force system2.png

Figure

 

Anticlock wise Moment:

It is moment of force, whose effect is to turn or rotate body, in anticlockwise direction. It take positive.

766_force system3.png

Figure

In the figure; Moment about Point 1 = F.D2 (is Clock wise) Moment about Point 2 = F.D1 (is Anti Clock wise) Moment about Point 3 = 0

That is if point lie on line of action of force, the moment of force about that point is zero.

 

Posted Date: 10/16/2012 7:15:23 AM | Location : United States







Related Discussions:- Moment of force, Assignment Help, Ask Question on Moment of force, Get Answer, Expert's Help, Moment of force Discussions

Write discussion on Moment of force
Your posts are moderated
Related Questions
Contrary to the misconception that the growth in automobile industry has catered only to the higher income-stratum of society by producing mostly passenger cars, the fastest growt

Graphical simulation animation of a CAD system can be used to inspect the tolerance and interference of matching components of a product. It will be possible to precisely define

Project is about Heat exchanger kit named TE 93.....Project guide has told us to do something with it..without modifying the project largely.....i came up with change of material o

ABCDEF is a regular hexagon having forces of magnitude 3, 6√3, 12, 3√3 and 6N which act at ‘A' in the direction of AB, AC, AD, AE and AF respectively. Determine the resultant compl

A simple Rankine cycle works between pressures 0.06 bar and 28 bar, the initial condition of steam being dry saturated. Determine the cycle efficiency, specific steam consumption a

What is heat treatment and why is it done? Heat treatment can be described as a combination of operations or processes in which cooling and heating of an alloy or metal is done

A converging elbow (see Figure 4) turns water through an angle of 135 o in a vertical plane. The flow cross-section diameter is 400 mm at the elbow inlet, section (1), and 200 mm

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Draw bending moment diagram: Draw the shear force diagram (SFD) & bending moment diagram (BMD) for the beam illustrated in Figure . Solution Reaction at the support A,

Objectives After studying this unit, you should be able to describe how a motorcycle works, identify the transmission system and its various part, explain abo