Constants Part A Three identical very dense masses of 3300 kg each are placed on
ID: 1883537 • Letter: C
Question
Constants Part A Three identical very dense masses of 3300 kg each are placed on the x axis. One mass is at 1 -120cm , one is at the orgin, and one is at Z2. 350 cm What is the magnitude of the not gravitational force Faw on the mass at the origin due to the other two masses? Take the gravitational constant to be G 6.67 10-11 N m2/kg Express your answer in newtons to three significant figures View Available Hint(s) Feras Submit Part B What is the direction of the net gravitational force on the mass at the origin due to the other two ex direction direc Submit Provide Fendt Next >Explanation / Answer
The left mass is 120cm away and right mass is 350cm away from the central mass. Left mass will cause attraction towards left and right one will cause it right.
Taking left as negative
F = -F1 + F2
= -GMm/r^2 + GMm/r^2
= GM^2 (-1/1.2^2 + 1/3.5^2)
= 6.67 x 10^-11 x 3300^2 (-0.613)
= -4.45 x 10^-4 N
a) 4.45 x 10^-4 N
b) -ve x direction
upvote if it helps