Question

Calculate the gravitational forces? between two 7.3 kg bowling balls separated by 0.65m between their centres and between the earth and moon

Answer 1

Gravitational Force between their centres = 8.4 * 10^-9 N.

Gravitational Force between the earth and moon = 2.01 * 10^20 N.

Explanation:

1). Gravitational Forces between the centres of the bowlings

F = $Gm_{1} m_{2}/r_{2}$

= {(6.67 * 10^-11) (7.3) (7.3)}/0.65

= 8.4 * 10^-9 N

2). Gravitational Force between the earth and moon

F = $Gm_{1} m_{2}/r_{2}$

= {(6.67 * 10^-11) (5.98 * 10^24) (7.36 * 10^22)}/(3.82 * 10^8)

= 2.01 * 10^20 N

Learn more: Gravitational Force

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