the gravitational potential difference between the surface of a Planet and a point 20 metre above is 16 joule per kg the work done in moving a 2 kg mass by 8 metre on a slope of 60 degree from horizontal is????
Answers
Answered by
45
work done in moving a mass by 20m=16J/kg
work done in moving a mass by 1m=16/20J/kg=0.8J/kg
given
l=8m
h/l=sin 60
height=8√3/2=4√3
work done=0.8×4√3
=3.2√3
=5.44J
work done in moving a mass by 1m=16/20J/kg=0.8J/kg
given
l=8m
h/l=sin 60
height=8√3/2=4√3
work done=0.8×4√3
=3.2√3
=5.44J
POSITIVE:
no its 11.1J plz look after ur ans!!plz
listen...thks as now i know that. all u did was correct just u forgot to multiple mass 2kg with..it so i mark u as brainliest here...
thanks
yup ur wlcm
Answered by
15
Height=8sin60=4√3
Now potential difference for height 4√3=16/20*4√3=16√3/5
Now, WKT,
work done= potential difference *mass
Therefore, work done=16√3/5*2=11.1 J
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