Equation of motion of lift, Mechanical Engineering

Equation of motion of lift:

Write equation of motion of lift when move up and when move down 

Assume,

 

1790_Equation of motion of lift.png

W = Weight carried by lift m = Mass carried by lift = W/g
a = Uniform acceleration

T = Tension in cable supporting lift, also called as Reaction of the lift

For UP MOTION

Net force in upward direction = T-W Also Net Force = m.a

That is        T-W = m.a                                                                                                                                       ...(i) FOR DOWN MOTION

Net force = W - T

Also Net Force = m.a That is

W - T = m.a                                                                                                                                     ...(ii)

Note: Wave taken weight or mass carried by lift only. We have assumed that weight carried by lift includes weight of lift also. But sometimes example contains weight of the lift and weight carried by lift separately. The weight carried by the lift or weight of the operator etc, will exert pressure on the floor of the lift. Whereas tension in cable will be given by algebraic sum of the weight of the lift and weight carried by lift.

Posted Date: 10/19/2012 7:43:58 AM | Location : United States







Related Discussions:- Equation of motion of lift, Assignment Help, Ask Question on Equation of motion of lift, Get Answer, Expert's Help, Equation of motion of lift Discussions

Write discussion on Equation of motion of lift
Your posts are moderated
Related Questions
one point cutting tool


Q. What are Preheat and interpass temperature? Preheat and interpass temperatures shall be in accordance with the applicable codes. Materials that require preheat for welding

Steam table - Thermodynamics: Sol.: Steam table offers various physical data regarding the properties of saturated water and steam. This table is very helpful in solving the

Two Wheeler Engines: Engine is a unit of motorcycle that runs the motorcycle by converting fuel energy to mechanical power. This power comes from the burning of fuel inside the cy

Constituents of seam welding The essential elements of a seam welding machine are: Main frame containing welding transformer and tap switch. Welding head consisting o

Lubrication System: This is an arrangement that consists of oil pump, oil sump, oil lines and lubricant. The lubricant is meant to lubricate the engine moving parts and it also cl

Reactions at point while the system is rotating: 8 kg ball is mounted on a horizontal bar associated to a vertical shaft. Neglecting the mass of the bar and shaft what are the

Supply Chain Management: In this unit, you have learned that the supply chain is the network of autonomous and semi-autonomous business entities, which are include through ups

Terms related to stream engine: STEA M ENGINE MAIN PARTS: 1 .     Frame: It supports the various moving parts. 2 .     Cylinder: It forms a chamber in which the