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
Define term transfer of stress to footing. Transfer of Stress to Footing:  The column transfers the load to the top of the footing by bearing. The magnitude of the pressure

MANDATORY CHECKS DURING THE FIRST SIX SERVICES Various steps in servicing of motorcycle are given below in a tabular form. 2.3.1 First Service and Second Ser

Find out the thickness of the metal and the hoop stress: The cylinder of a hydraulic press has an internal diameter of 0.3 m & is to be designed to withstand a pressure of 10

Section modulus: Define the Section modulus. What do you mean by torsional section modulus or polar modulus?  The moment of inertia of plane about the axis perpendicula

Q.   Find the dimension of strongest rectangular beam that can be cut out of log of 25 mm  diameter. Sol .: b 2 +  d 2 = 25 2 d 2 = 25 2 -  b 2 As M/I = σ/y; M =

Diamond Crossing: Two tracks crossing one another is known as a diamond crossing. The component of a Diamond Crossing are indicated in Figure. Figure: Diamond Cross

do you know the grade to the answers of the questions in the pre paid solutions..?? and what if the answers are wrong..?? as i need all working out shown

Explain the statement- subsidence of  the ground Another type of problem is the subsidence of  the ground due to breakdown of weak rocks like  limestone, soluble rocks (gypsum

Resulting structure of steel: Heat treatments as mentioned below are given to thin steel strips for which TTT diagram is as shown in Figure 19. What will be the resulting stru