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

Main Factors to be Considered when Selecting Material The main factors to be considered when selecting a material to meet some specific requirement are: Fitness of use,

case study for factors affecting process design decisions

A 10 kg block slides down a smooth inclined surface as shown in Figure. Show the terminal velocity of the block if the 0.1 mm gap among the block and the surface have SAE30 oil at

Engine oil : Check engine oil level and viscosity.

Pin-jointed steel structure: Find out the forces in the members of the pin-jointed steel structure. Solution Joint D  Suppose f CD and f DE both as tensile forc

Derive the mathematical Heat Conduction equation through a composite wall. Determine Thermal contact Resistance ?


(Buoyancy; force & moment balance) A partially submerged, homogeneous timber is 0.15m by 0.35m in cross-section. What is the specific weight of the timber and the tension in the r

Plot Plan Alignment Generally the process units will be positioned in process flow order, with common utility blocks positioned to provide economical and effective services. P