Question 35:
Calculate the force of gravitation between two objects of masses 50 kg and 120 kg respectively kept at a distance of 10 m from one another. (Gravitational constant, G = 6.7 x 10-11 Nm2 kg-2)
Lakhmir Singh Physics Class 9
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Answer:
4.02×10^-9 N
Explanation:
Two objects say m1 and m2 have masses of 50kg and 120kg respectively.
The formula of gravitational force of two objects having different masses m1 and m2 are:
F= (G×m1×m2)/r2
r is the distance between two objects of masses m1 and m2 respectively.
G is the gravitational constant universally where its value is 6.67×10^-11 N m^2/ kg^2
Therefore the force of attraction between two objects having different masses m1 and m2 can be deducted by the above stated formula.
F=[ (6.67× 10^-11)×50×120]/10^2
= 4.02× 10^-9 N
Hence the force of attraction between these two objects are 4.02×10^-9 N.
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