A sphere of mass 40kg is attracted by another mass 15kg with a force of 1/40 mg find the value of the gravitational constant if their centres are 0.40m apart?
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Explanation:
f=1/40
m1=40kg ,m2=15kg
f=1/40×10-6×9.8
r =0.40m
f =g m1 m2 / r²
g =f. r²/m1 m2 = 1/40×10-6×9.8×(0.40)²/40×15
g = 3.98×10-8/600
6.533×10-11
g =6.534×10-11 nm² kg-²
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