# Fundamentals of Physics Study Set 2

Physics & Astronomy

## Quiz 12 : Equilibrium and Elasticity Study Flashcards  Looking for Introductory Physics Homework Help?

## Quiz 12 :Equilibrium and Elasticity

Question Type  A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N.The magnitude of the tension force of each of the two supporting ropes is:
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B

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Choose question tag  For a body to be equilibrium under the combined action of several forces:
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C

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Choose question tag  A massless meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark.A force is applied perpendicularly to the end of the stick at 0 cm, as shown.A second force (not shown)is applied perpendicularly to the stick at the 100-cm end of the stick.The forces are in the plane of the table top.If the stick does not move, the force exerted by the pivot on the stick: Free
Multiple Choice

E

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Choose question tag  The center of gravity coincides with the center of mass:
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Choose question tag  A 5.1-kg mass is located at the origin, and a 2.3-kg mass is located at x = 4.9 cm.Assuming g is constant, what is the location of the center of mass xcom, and the location of the center of gravity xcog, of the two masses?
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Choose question tag  Which of the following is NOT in equilibrium?
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Choose question tag  Which of the following is in static equilibrium?
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Choose question tag  Three identical uniform rods are each acted on by two or more forces, all perpendicular to the rods.Which of the rods could be in static equilibrium if an additional force is applied at the center of mass of the rod? Multiple Choice
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Choose question tag  The location of which of the following points within an object might depend on the orientation of the object?
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Choose question tag  A net torque applied to a rigid object always tends to produce:
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Choose question tag  A massless meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark.A force is applied perpendicularly to the end of the stick at 0 cm, as shown.A second force (not shown)is applied perpendicularly at the 60-cm mark.The forces are in the plane of the table top.If the stick does not move, the force exerted by the pivot on the stick: Multiple Choice
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Choose question tag  For a body to be equilibrium under the combined action of several forces:
Multiple Choice
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Choose question tag  To determine if a rigid body is in equilibrium the vector sum of the gravitational forces acting on the particles of the body can be replaced by a single force acting at:
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Choose question tag  For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated about:
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Choose question tag  A picture can be hung on a wall in three different ways, as shown.The tension in the string is: Multiple Choice
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Choose question tag  A picture P of weight W is hung by two strings as shown.The magnitude of the tension force of each string is T.The total upward pull of the strings on the picture is: Multiple Choice
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Choose question tag  A cube balanced with one edge in contact with a table top and with its center of gravity directly above the edge is in ________ equilibrium with respect to rotation about the edge and in ________ equilibrium with respect to rotation about a horizontal axis that is perpendicular to the edge.
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Choose question tag  The conditions that the sum of forces and the sum of the torques both vanish:
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Choose question tag  A cylinder placed so it can roll on a horizontal table top, with its center of gravity below its geometrical center, is:
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