A body the wieght 20N.How much force is required to move it vertically upward with an acceleratoin of 2 ms-2
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given :
mg = 20N
a=2m/s^2
let us take g=10m/s^2
=) m=20/10 = 2 kg
WKT F= ma
=) F=2*2
=) F=4N
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