A box has a mass of 40 lb, and a building has a height of 60 feet. (a) Find the force of gravity acting on the box. (b) Find the work required to lift the box from the ground to the roof of the building. (c) Find the potential energy of the box when it is on the roof of the building.
A box has a mass of 40 lb, and a building has a height of 60 feet. (a) Find the force of gravity acting on the box. (b) Find the work required to lift the box from the ground to the roof of the building. (c) Find the potential energy of the box when it is on the roof of the building.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:4. A box has a mass of 40 lb, and a building has a height of 60 feet.
(a) Find the force of gravity acting on the box.
(b) Find the work required to lift the box from the ground to the roof of the building.
(c) Find the potential energy of the box when it is on the roof of the building.
(d) If the box is dropped off the roof of the building, find the kinetic energy and velocity of the box
when it hits the ground.
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