Help 重%24You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (includingpassengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speedto be 10.0 m/s, and the maximum acceleration magnitude to be 4.40 m/s. Ignore friction.What is the minimum time it will take the elevator to ascend from the lobby to the observation deck, a vertical displacement of 640 m?< Prev14 15of 1552°Fsearch直0

Name: Help 重%24You are designing a high-speed elevator for a new skyscraper.
Uploaded: 2024-03-20T06:57:47.000Z
Channel: Bartleby
Description: Help 重%24You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of 2400 kg (includingpassengers). For passenger comfort, you choose the maximum ascent speed to be 18.0 m/s, the maximum descent speedto be 10.

Given, the following data: mass, m = 2400 kg maximum ascent speed, v1 = 18 m/s Maximum acceleration,…

Answered: What is the minimum time it will take…

Science

Physics

What is the minimum time it will take the elevator to ascend from the lobby to the observation deck, a vertical displacement of 640 m?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section: Chapter Questions

Problem 6STP

See similar textbooks

Similar questions

If the effects of atmospheric resistance are accounted for, a freely falling body has an acceleration defined by the equation a = 9.81[1 - v ^2 (10 ^-4)] m/s^2, where v is in m/s and the positive direction is downward. If the body is released from rest at a very high altitude, determine (a) the velocity when t = 5 s, and (b) the body’s terminal or maximum attainable velocity (as t S ).
The block has mass m = 6.8 kg, the ramp is at an angle of θ = 28 degrees, the coefficient of kinetic friction between the block and the ramp is μk = 0.25, and the applied force is F = 156.4 N. What is the acceleration of the block up the ramp, in m/s2?
/ A 50.0?? woman inside an elevator is standing on a scale. How will the acceleration of the elevator affect the scale reading? Calculate the scale reading when (a) the elevator is accelerating upward at ay=3.0 m/s2, (b) the elevator is going up with a constant velocity of vy=2.0 m/s, (c) the elevator is at rest, (d) the elevator is going down with acceleration ay=-3.0 m/s2, and (e) the elevator is going down with a constant velocity vy= -2.0 m/s.
A trained sea lion slides from rest with constant acceleration down a 3.0-m-long ramp into a pool of water. If the ramp isinclined at an angle of u = 23° above the horizontal and the coefficient of kinetic friction between the sea lion and theramp is 0.26, how much time does it take for the sea lion to make a splash in the pool?
An elevator in the Taipei 101 skyscraper can start fromrest and accelerate to a maximum speed of 16 m>s with a constantacceleration of 1.1 m>s2. Through what distance does the elevatormove as it accelerates to its maximum speed?
The pilot of a jet transport brings the engines to full takeoff power before releasing the brakes as the aircraft is standing on the runway. The jet thrust remains constant, and the aircraft has a near-constant acceleration of 0.44g. If the takeoff speed is 150 km/h, calculate the distance s and time t from rest to takeoff. Ans: s = _____ m t = _____ s
What is the expected value of acceleration of a car (in m/s2) on a frictionless track that is inclined at an angle of 5⁰.
A flatbed truck moving at 28 m/s carries a steel girder that rests on its wooden floor. The girder is not strapped down, in violation with USDOT regulations. If the coefficient of static friction between steel and wood is 0.52, what is the minimum distance over which the truck can come to a stop without the girder sliding toward the cab of the truck? (answer: 77 m) (b) What is the minimum time over which the truck can accelerate forward from 0 m/s to 28 m/s with a constant acceleration without the girder sliding off the back? (answer: 5.5 s) FNET = ma fs,max = sN W = mg v2 = v02 + 2ax g = 9.81 m/s2
A 10 kg cannonball is launched vertically upwards from the ground with an initial velocity of 50 m/s. Determine the maximum height that the projectile can reach when the air resistance is measured as FD = (0.01v2) N, (a) ignoring the air resistance, (b) v being the measured velocity at any instant (m/s).
= 32 kg rides on the bed of a truck attached by a cord to the back of the cab as in Figure P4. 26. The cord can withstand a maximum tension of 68 N before breaking. Neglecting friction between the crate and truck bed, find the maximum acceleration the truck can have before the cord breaks.
For bodies that are falling, to achieve terminal velocity, what must happen to the acceleration of the body? a. The acceleration of the body is remains the same through time. b. The acceleration of the body must decrease over time c. The acceleration of the body must equal to the acceleration due to gravity. d. The acceleration of the body must increase over time.
As a block slides down a frictionless incline, which of the followingstatements is true? (a) Both its speed and accelerationincrease. (b) Its speed and acceleration remain constant. (c)Its speed increases and its accel eration remains constant.(d) Both its speed and accel eration decrease. (e) Its speedincreases and its acceleration decreases.