Q. Suppose you would enter a vacuum chamber (on Earth), that is, a chamber with no air in it. Inside this chamber, if you dropped a hammer and a feather from the same height at the same time, both would hit the bottom at the same time.
Q. A loudspeaker of mass 15.0 {rm kg} is suspended a distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30 {rm m}. What is the tension T in each of the cables?
Use 9.80 {rm m/s}^2 for the magnitude of the acceleration due to gravity.