A car is to be hoisted by elevator to the fourth floor of a parking garage, which is at a height h above the ground. If the elevator can accelerate at a,, decelerate at a, and reach a max imum speed v, determine the shortest time to make the lift, starting from rest and ending at rest. Given: h = 16 m m m aj = 0.2 az = 0.1 - v = 2.7

International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.11P: Solve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.
icon
Related questions
Question

Question 18

Problem 12–18
A car is to be hoisted by elevator to the fourth floor of a parking garage, which is at a height h
above the ground. If the elevator can accelerate at a,, decelerate at a, and reach a max imum
speed v, determine the shortest time to make the lift, starting from rest and ending at rest.
m
m
h = 16 m
aj = 0.2
az = 0.1
2
v = 2.7
Given:
Solution:
Assume that the elevator never reaches its maximum speed.
m
1 s
t2 = 2 s
Vmax = 1
S
hị = 1 m
Guesses
t1
Given
Vmax = ajti
1
h1
0 = Vmax
h = hị + Ynalt2 - ti) - azlt2 - 1)*
Transcribed Image Text:Problem 12–18 A car is to be hoisted by elevator to the fourth floor of a parking garage, which is at a height h above the ground. If the elevator can accelerate at a,, decelerate at a, and reach a max imum speed v, determine the shortest time to make the lift, starting from rest and ending at rest. m m h = 16 m aj = 0.2 az = 0.1 2 v = 2.7 Given: Solution: Assume that the elevator never reaches its maximum speed. m 1 s t2 = 2 s Vmax = 1 S hị = 1 m Guesses t1 Given Vmax = ajti 1 h1 0 = Vmax h = hị + Ynalt2 - ti) - azlt2 - 1)*
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Engineering Drawing
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
International Edition---engineering Mechanics: St…
International Edition---engineering Mechanics: St…
Mechanical Engineering
ISBN:
9781305501607
Author:
Andrew Pytel And Jaan Kiusalaas
Publisher:
CENGAGE L