Three identical very dense masses of 3200 kg each are placed on the x axis. One mass is at x1 = -120 cm , one is at the origin, and one is at x2 = 440 cm . A) What is the magnitude of the net gravitational force Fgrav 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/kg2 .
B) What is the direction of the net gravitational force on the mass at the origin due to the other two masses?

graph question answered .. you think better when you are relaxed and happy

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

the answer is 12 as i may remember

: )

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle