Respuesta 1)
m1 = 70 kg
m2 = 132 libras * 0, 453 kg / 1 libra = 59, 79 kg
d = 3, 5 m
G = 6, 673 x 10 ^ - 11 N·m2 / kg2
Fgrav = ?
<img src="https://tex.z-dn.net/?f=Fgrav%20%3D%20G%20%2A%20m1%20%2A%20m%5E2%20%2F%20d%5E2%0A%0AFgrav%20%3D%206%2C673x10%5E%7B-11%7D%20N%2Am%5E2%2Fkg%5E2%20%2A%2070%20kg%20%2A%2059%2C79%20kg%20%2F%20%283%2C5m%29%5E2%0A%0AFgrav%20%3D%2027931%2C3%20x%2010%5E%7B-11%7D%20N%2Am%5E2%20%2F%2012%2C25%20m%5E2%0A%0AFgrav%20%3D%202280%2C10%20x%2010%5E%7B-11%7D%20N%20%0A%0AFgrav%20%3D%202%2C2801%20x%2010%5E%7B-8%7D%20N%20----%5C%20%5Ctextgreater%20%5C%20%20solucion" />
Respuesta 2 )
m1 = 7, 3 x10 ^ 22 kg
m2 = 5, 98 x10 ^ 24 kg
d = 385.
000 km * 1000 m / 1 km = 385.
000. 000 m
Fgrav = ?
Fgrav = G * m1 * m2 / d ^ 2
Fgrav = 6, 673 x 10 ^ - 11 N * m ^ 2 / kg ^ 2 * 7, 3 x10 ^ 22kg * 5, 98x10 ^ 24kg / (385.
000. 000 m ) ^ 2
Fgrav = 291, 30 x 10 ^ 35 N * m ^ 2 / 1, 48 x 10 ^ 17 m ^ 2
Fgrav = 196, 82 x 10 ^ 18 N
Fgrav = 1, 9682 x 10 ^ 20 N - - - - > solucion
saludos desde venezuela.