• Show all your work with all details for each question by order.
• Forces and components must be verified.
• A free-body diagram must be verified for each mass if it is required.
• Write the required formulas and equations for each problem

8. A 24.0-cm-diameter cylinder with length of 60.0 cm which it is falling vertically on its circular side has a terminal speed of 90 m/s in the air. What is the cylinder's mass? Density of air is 1.3 kg/m' and drag coefficient of C = 0.75. 9. The string of a conical pendulum (very similar to motion of tetherball) is 65.0 cm long and the mass of the bob is 0.40 kg. (a) Find the angle between the string and the horizontal axis when the tension in the string is 4.0 times the weight of the bob. (b) Under those conditions what is the period and frequency of the pendulum? 10. A 200 g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor.(the distance from the floor to the center of the rotation is 200 cm). The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 650 cm above the floor. What was the tension in the string an instant before it broke