Two forces are applied to an object as shown. Using F = 23.N, ¢1 = 46°, F2 = 42_N, and o, = 21°m, find the net force on the object. F1 P1 P2 F2 2. magnitude 27.79.N 21.39.N 19.16.N А D. 37.54.N В. E. 39.17.N C. F. 23.28 N /-/ 3. direction (counter-clockwise from +x axis) A. 202.2° D. 201° В. 151.4° E. 176.3° C. 163.2° F. 184.2°
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- A person of weight 490 N stands on a scale in an elevator. What will the scale be reading? when the elevator is accelerating downward at 6 m/s² A. 190N В. 790N С. 490N D. Zero В O D O AA 500 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob’s rope pulls to the left, 15° below horizontal, with 500 N of tension. Ellen’s rope pulls toward the right, 25° below horizontal.a. What tension must Ellen maintain in her rope to keep the piano descending vertically at constant speed?b. What is the tension in the vertical main cable supporting the piano?7. A bird has a mass of 24 g and perches in the middle of a stretched telephone line. a. Show that the tension in the line can be calculated using the equation T = mg2sine. Determine the tension when b. 0 = 5° and c. e = 0.5°. Assume that each half of the line is straight.
- 9. True or False questions. Circle the correct answer. a. An example of a Vector is Temperature. TRUE or FALSE b. In a vacuum, Heavier objects fall faster than lighter objects. TRUE or FALSE C. X values and Y values can be determined independently when performing calculations using Galileo's kinetic equations. TRUE or FALSE d. Static friction is a force that applied to object that is stationary. TRUE or FALSE e. When a spring is compressed, the spring is said to have potential energy. TRUE or FALSE f. A car crash is an example of an Impulse. TRUE or FALSE g. Centripetal force is not a new force. It is any combination of forces that cause an object to follow a path of circular motion. TRUE or FALSE h. Consider the following shapes: Cylinder, Hoop, Solid sphere, and spherical shell. The cylind has the greatest inertia. TRUE or FALSE1. show complete solutions3. 7.00 kg 3.00 kg 7.00 kg What is the force by tension above the single 7kg bucket hanging on the left? A 68.6 N В. 80.7 N C. 40.3 N D. 12.11 N Page 4 I 21 Q +