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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 NExplanation: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)/r2r 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^2Therefore 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 NHence the force of attraction between these two objects are 4.02×10^-9 N. |
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