== [Ezcblomagi 1 Free-body diagrams are an importan Label the vector arrows on the free- t step for solvin [Appendix A] E g questions involving vertical motion. body diagrams beloy with the appropriate forces: Force due to gravity Hum Applied force Hu%v a. A force is applied to hold a block stationary above the ground. b. A force is applied to accelerate a block upwards. 2 Draw a free-body diagram on each object for each motion description given. Ignore effects due to air resistance. [Appendix A] a. A ball falls to the ground. b. A ball is thrown up into the air and is travelling to the top of the throw. c. A rocket travels upwards at a constant d. A rocket accelerates upwards. velocity. w In some elevators, it is possible to notice yourself geuting lighter or heavier as the elevator starts and stops. Assume you are riding in an elevator; describe your apparent weight (.e., lighter, heavier or the same) as you [Appendix A] | Motion Apparent weight / begin travelling upwards. / begin travelling downwards. / o|e slow to a stop as you move upwards. p o slow to a stop as you move downwards. i m travel upwards at a constant speed. / travel downwards at a constant speed. / Use a ruler to draw a free-body diagram for each of the following situations. Use T for the tension force in the elevator cable and F, for the force due to gravity. [Appendix A} a. An elevator is stationary at the third floor An elevator passes the fourth floor at a of a high-rise. constant velocity. . An elevator accelerates downwards from | d. An elevator accelerates upwards from rest. rest. e. An elevator slows to a stop as it fises to f. An elevator slows to a stop at the the fifth floor of a high-rise. basement floor of a high-rise