An object has two forces acting on it: 8.4 N [S] and 7.5 N [E]. The magnitude of the net force is a. 1.3 x 10° N d. 4.0 N b. 16 N e. 0.9 N c. 11 N
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- 6. A box is on a ramp inclined at 25° to the horizontal. The coefficient of static friction is .30, and of kinetic friction .20. 1²=30 pe Me=20m a. The box slides down the ramp. b. The box stays on the ramp without slipping. c. The box first slips, but then stays fixed after slowing down. d. We need the mass of the box to answer the question. 3250 www th mg OL M = mg COSTSTwo masses m₁ = 7.1 kg and m2 = 3.6 kg are connected by a string as shown. If the pulley is massless and the surface is frictionless, the magnitude of the tension in the string is A. 11.4 N OB. 11.9 N OC. 23.4 N OD. 46.2 N E. 69.6 N m₁ m₂3. 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 +
- A 120 N iron ball rests on a 20° smooth incline. What is the tension in the rope, hung at 40° below horizontal, which prevents the ball from sliding or rolling down the incline?a. 44N b. 50N c. 54N d. 60N3. Which of the following sets of forces acting on an object could not be in equilibrium? a. 4 N, 4N, 4N b. 5 N, 10 N, 15 N c. 6 N, 7 N, 10 N d. All the above sets of forces can be in equilibrium. B