6. A 35.0 kg kangaroo is riding up in an elevator starting from rest. a. What is the normal force acting while the elevator travels at a constant speed? b. Draw a free body diagram for the kangaroo while it accelerates up at +2.5 m/s2. c. What is the normal force acting while the kangaroo is accelerating at +2.5 m/s?? d. What is the acceleration of the elevator when the reading on the bathroom scale under the kangaroo is 220 N? 7. A 700 kg elevator (including Oiler's fans) accelerates from rest at +3.0 m/s2. Inside the elevator a 65.0 kg fan stands on his trusty bathroom scale and is puzzled. a. What tension is in the cable that lifts the elevator? b. What is the reading on the fan's bathroom scale? c. Find the normal force acting on the fan while accelerating down at 2.00 m/s2. 8. A 2.50 x 105 kg rocket accelerates from the take-off pad at a rate of +5.06 m/s2. a. Calculate the weight of the rocket. b. Draw a free body diagram for the rocket a couple meters off the ground. c. Calculate the thrust required to accelerate the rocket at 5.06 m/s2. 9 The space shuttle has a mass of 100 T at lift off. What thrust is required to "govern the main engine throttle command so that acceleration does not exceed 3.0 g's?" Note that : 1 g is 1 times the acceleration due to gravity. V FN