Q. A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
Q. A 22kg loudspeaker is suspended 3M below the ceiling by two cables that are each 20 degrees from vertical. What is the tension in the cables?