Lifting force in newtons
Favorites|Homepage
Subscriptions | sitemap
HOME > Physics > Lifting force in newtons

Lifting force in newtons

[From: ] [author: ] [Date: 11-05-14] [Hit: ]
* explanations where needed would be so helpful as I want to understand when i need to do it for real-(a) By the formula: force = mass * acceleration ; F = 50 * 9.(b) By the formula: work done = force * distance ; E = 490 * 0.75 ; E = 367.(c) By the formula: power = energy / time ; P = 367.5 / 0.The general trick to these questions is just to apply the formulas (and rearrange if necessary) with the information you are given.......
A person exercising in the gym lifts a heavy load of mass 50kg through a distance of 0.75m in 0.5 seconds
(a) If the strength of gravity is 9.8 N/kg what is the lifting force in Newtons the person must use ?

(b) What is the work done in joules by the person in lifting the weight with this force?

(c) What is the power output of the person in joules per second ?

* explanations where needed would be so helpful as I want to understand when i need to do it for real

-
(a) By the formula: force = mass * acceleration ; F = 50 * 9.8 ; F = 490N

(b) By the formula: work done = force * distance ; E = 490 * 0.75 ; E = 367.5J

(c) By the formula: power = energy / time ; P = 367.5 / 0.5; P = 735W

The general trick to these questions is just to apply the formulas (and rearrange if necessary) with the information you are given.
1
keywords: Lifting,newtons,force,in,Lifting force in newtons
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .