claculate the force of gravity between two identical balls 8kg each, if they are 5m apart?

To calculate the force of gravity between two objects, we can use Newton's law of universal gravitation formula:

F = G * (m1 * m2) / r^2

Where:
F is the force of gravity between the two objects
G is the gravitational constant (approximately equal to 6.67430 × 10^-11 Nm^2/kg^2)
m1 and m2 are the masses of the two objects
r is the distance between the centers of the two objects

In this case, the masses of the two balls are identical, both being 8 kg, and the distance between them is 5 m.

Plugging these values into the formula, we get:

F = (6.67430 × 10^-11 Nm^2/kg^2) * (8 kg * 8 kg) / (5 m)^2

Simplifying the equation:

F = (6.67430 × 10^-11 Nm^2/kg^2) * (64 kg^2) / (25 m^2)

F = (6.67430 × 10^-11 Nm^2) * (64 kg^2) / (25 m^2)

F = 1.70705 × 10^-9 N

Therefore, the force of gravity between two identical balls, each weighing 8 kg and placed 5 m apart, is approximately 1.70705 × 10^-9 Newtons.