College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Transcribed Image Text:8. The total force acting on an abject points to the left. Two of the three forces
are shown in the figure. Where should be the missing third force pointing?
Two of the three
forces exerted on
an object
F,
b.
9. A ball rolls down a slope and aff a flat flaar. Ignaring air
resistance, what force or farces act on the ball as it moves
through the air just after leaving the flat floor?
a. The weight of the ball acting vertically down.
b. A horizontal force that maintains the motion.
C A force whose direction changes as the direction of
motion changes.
d. The weight of the ball and a horizontal force.
e. The weight of the ball and a force in the direction of motion.
10. A steel bar hangs from a cable as a crane tifts it. What forces act on the bar?
a. Gravity
b. Gravity and tension in the cable
c. Gravity and a force of motion
d. Gravity and tension and a force of motion
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- 17. Three blocks are connected on a table as shown in the figure. The blocks have masses m1 = 4 kg, m2 = 1 kg, and m3 = 2 kg. The coefficient of kinetic friction between block m, and the table is Assume the pulleys are massless and frictionless. a) Calculate the acceleration of each block. b) Calculate the tensions in each of the two 0.35. ropes.arrow_forwardWhat does static equallibrium mean in mechanics for an object which can move in a two dimensional space? Select all that apply. 1. The object is moving. 2. The object is not moving. 3. Assume that x and y directions are perpendicular to each other. The sum of all the forces on the object is zero in the x direction, but not in the y direction. 4. The sum of all the forces on the object is zero in the y direction, but not in the x direction. 5. The sum of all the forces on the object is zero in both the x and y directions, but not necessarily in all other directions.arrow_forwardPlease explain wellarrow_forward
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