1. An object is hanging by a string from
your rearview mirror. While you are accelerating at a constant rate from rest
to 28 m/s in 6.0 s, what angle does the string
make with the vertical? See Fig. 4-44.
2. Suppose the pulley in Fig. 4-46 is
suspended by a cord C. Determine the tension in this cord after the masses are
released and before one hits the ground. Ignore the mass of the pulley and