Grade 10 Physics Extra Practice Booklet Term 3 Finals Concept 31: State Newton\'

Question

Grade 10 Physics Extra Practice Booklet Term 3 Finals Concept 31: State Newton's Universal Law of Gravitation State Newton's Universal Law of Gravitation From Newton's Universal Law of Gravitation, what equation can be used to describe the force of attraction, F, acting between two masses? From Newton's Universal Law of Gravitation, what happens to the value of the force due to gravity between two bodies when the distance between two masses is tripled (times 3)? the distance between two masses is quadrupled (times 4)? each mass is doubled? each mass is tripled (times 3)? the distance between two masses is halved (times h)? one of the masses is doubled? What is the value of the gravitational constant, G?

Explanation / Answer

Newtons law of gravitation states that force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between the charges

F = kq1q2 / r^2

59) i) the new force will be 1/9 times of the original force

ii) the new force will be 1/16 times of the original force

iii) the new force will be 4 times of the original force

iv) the new force will be 9 times of the original force

v) the new force will be 4 times of the original force

vi)the new force will be 2 times of the original force

60 ) value of gravitational constant = 6.67*10^-11 N m2 / kg2

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