Question

weights of two bodies are 20 n and 30 n if they are separated by a distance of 2 m what is the force of gravitation acting between them

Answer 1

Answer:

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Answer 2

Assuming it’s on earth, g=9.8m/s2

Weight of a body W=mg

Therefore mass of the two bodies is

m1=20/9.8=2.04kg

m2=30/9.8=3.06kg

Therefore, from Newton’s law of gravity,

F=Gm1m2r2

Here, r=2m and G is the universal gravitational constant equal to 6.67×10−11. Therefore,

F=6.67×10−11×2.04×3.064

F=0.00000000010409202N  

F=1.0409202×10−10N