A child sits on the floor and twirls a 0.100 kg ball connected to a 1.0 m string in a horizontal cirlce along the floor with a speed of 2.0 m/s. What forces are acting on the floor? A. All of the above
B. Only gravity force and tension
C. Tension
D. Force due to gravity weight normal force

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.