Question

Sample Problem 1.Calculate the force of gravitation due to earth on a ball of 1 kg mass lying on the ground. (Mass of earth = 6 x 1024 kg; Radius of earth = 6.4 x 109 km; and G = 6.7 x 10-11 Nm2/kg) ​

Answer 1

Answer:

F=Gm1m2/R*R

G= 6.67*(10)-11*Nm*m/kg*kg

M1= 1kg

M2(Earth)= 6*(10)24kg

R= 6.4*(10)6

F = 6.67*(10)-11*Nm*m*1kg*6*(10)24kg/kg*6.4*(10)6*6.4*(10)6

F =40.02*(10)-11+24*Nm*m*kg*kg/40.96*(10)6+6

F =4002*(10)13*100/4096*100*(10)12

F =4002*(10)13-12/4096

F =0.9770*10

F =9.8m/s*s