Question

plz ans this ques of class 9 physics gravitation

Answer 1

we can solve for M by equating Newton's Law of Gravity with his second law of motion

F = ma

We have:

F = GmM/r2 = ma → GM/r2 = a

Solving for M, the mass of the Earth, and using

Where

a = 9.8 m/s2,
r = 6.38 × 106 m, and
G = 6.67 × 10−11 m3/(kg sec2)

we obtain:

M = ar2/G = 5.98 × 1024 kg. thanks

Answer 2

slove by the formula Me=gRe^2/G

9.8x (6.4X10^6)^2/6.67x10^-11

=6X10^24