Question

7. Calculate the force of attraction between
two metal spheres each of mass 90 kg, if the
distance between their centres is 40 cm.
[G = 6.67 x 10-" N m'/kg²1
blution:
Even: mı = 90 kg, m2 = 90 kg,
r= 40 cm = 40 x 10-2 m,
G-667 x 10-11 Nm2/kg2​

Answer 1

Answer:

force of attraction = F

F = G*m1*m2/r^2

F = 6.67*10^-11*90*90/4*10^-4

F = 6.67*90*22.5*10^-7

F= 2571.75*10^-7 N