Determine the Universal Gravitational Constant (G).

G = 6.6675 x N/

Explanation:

From Newton's law of universal gravitation,

F =  .................. 1

Where F is the force of attraction, G is the universal gravitation constant, M is the mass of a massive object e.g earth, m is the mass of the smaller object e.g moon, r is the radius of the massive object.

Newton's second law states;

F = mg  ...................  2

F is the force, m is the mass of the object and g is the gravitational force on the object.

Equating equations 1 and 2 gives;

mg =

So that;

g =

⇒ G =

where: g = 9.81 m/, r = 6371 km, M = 5.972 x kg.

G =

  =

  = 6.6675 x N/

The Universal Gravitational Constant (G) is 6.6675 x N/.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.