An 8.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. a particle of mass m is released from a point between the two masses 20.0 cm from the 8.00 kg mass along the line connecting the two fixed masses.
find the magnitude and direction of the acceleration of the particle. answer from book: 2.2 x 10^-9 m/s^2 - toward the 8.00 kg

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.