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Find the work done and weight:

+2 votes
100 views
asked Aug 29, 2016 in Physics by Rahul Roy (7,955 points)
A block of mass m=2kg is pulled by a force f=40 N upwards through a height h=2m find the work done on the bock by the applied force f and its weight mg> (take g=10m/s^2).

1 Answer

+2 votes
answered Aug 30, 2016 by vikash (21,287 points)
selected Sep 25, 2016 by sarthaks
 
Best answer

Given:

Mass of block = 2Kg

F = 40 N

h = 2m

Work done by the force F = F*h = 40*2= 80 Joule and,

Work done by weight mg = -mgh = -2*10*2 = -40 J

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