PHYS 216 Assignment 3

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PHYS 216 Assignment 3

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PHYS 216 Assignment 3http://homeworkfy.com/downloads/phys-216-assignment-3/PHYS 216 Assignment 3You will receive no credit for items you complete after the assignment is due. Grading PolicyTactics Box 4.1 Drawing Force VectorsLearning Goal:To practice Tactics Box 4.1 Drawing force vectors.To visualize how forces are exerted on objects we can use simple diagrams, such as vectors. This Tactics Boxillustrates the process of drawing a force vector by using the particle model, in which objects are treated as points.TACTICS BOX 4.1 Drawing force vectors1. Represent the object as a particle.2. Place the tail of the force vector on the particle.3. Draw the force vector as an arrow pointing in the direction that the force acts, and with a lengthproportional to the size of the force.4. Give the vector an appropriate label.The resulting diagram for a forcea point.exerted on an object is shown in the drawing. Note that the object is represented asPart AA book lies on a table. A pushing forceparallel to the table top and directed to the right is exerted on the book.Use the diagram below to draw the force vector. Use the black dot as the particle representing the book and becertain to draw the force vector so that it has the correct orientation.Draw the vector starting from the black dot. The location and orientation of the vector will be graded. Thelength of the vector will not be graded.ANSWER:https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808481/127/20/2015Assignment 3Part BThis question will be shown after you complete previous question(s).Part CThis question will be shown after you complete previous question(s).Problem 4.7A mountain climber is hanging from a rope in the middle of a crevasse. The rope is vertical.Part AIdentify the forces on the mountain climber.Check all that apply.ANSWER:https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808482/127/20/2015Assignment 3Kinetic frictionWeightTensionNormal forceStatic frictionProblem 4.16A constant force is applied to an object, causing the object to accelerate at 10.Part AWhat will the acceleration be if the force is halved?Express your answer using two significant figures.ANSWER:=Part BWhat will the acceleration be if the objects mass is halved?Express your answer using two significant figures.ANSWER:=Part CWhat will the acceleration be if the force and the objects mass are both halved?Express your answer using two significant figures.ANSWER:=Part DWhat will the acceleration be if the force is halved and the objects mass is doubled?Express your answer using two significant figures.https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808483/127/20/2015Assignment 3ANSWER:=Problem 4.22Two children fight over a 200 stuffed bear. The 25 boy pulls to the right with a 15 force and the 20to the left with a 17 force. Ignore all other forces on the bear (such as its weight).girl pullsPart AAt this instant, can you say what the velocity of the bear is?Enter yes or no.ANSWER:Part BAt this instant, can you say what the acceleration of the bear is?Enter yes or no.ANSWER:Part CThis question will be shown after you complete previous question(s).Part DThis question will be shown after you complete previous question(s).A Book on a TableA book weighing 5 N rests on top of a table.https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808484/127/20/2015Assignment 3Part AA downward force of magnitude 5 N is exerted on the book by the force ofANSWER:the tablegravity.inertiaPart BAn upward force of magnitude _____ is exerted on the _____ by the table.ANSWER:6 N / table5 N / table5 N / book6 N / bookPart CDo the downward force in Part A and the upward force in Part B constitute a 3rd law pair?You did not open hints for this part.ANSWER:https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808485/127/20/2015Assignment 3yesnoPart DThe reaction to the force in Part A is a force of magnitude _____, exerted on the _____ by the _____. Its directionis _____ .You did not open hints for this part.ANSWER:5 N / earth / book / upward5 N / book / table / upward5 N / book / earth / upward5 N / earth / book / downwardPart EThe reaction to the force in Part B is a force of magnitude _____, exerted on the _____ by the _____. Its directionis _____.ANSWER:5 N / table / book / upward5 N / table / earth / upward5 N / book / table / upward5 N / table / book / downward5 N / earth / book / downwardPart FWhich of Newtons laws could we have used to predict that the forces in Parts A and B are equal and opposite?Check all that apply.ANSWER:Newtons 1st lawNewtons 2nd lawNewtons 3rd lawhttps://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808486/127/20/2015Assignment 3Part GWhich of Newtons laws could we have used to predict that the forces in Parts B and E are equal and opposite?Check all that apply.ANSWER:Newtons 1st lawNewtons 2nd lawNewtons 3rd lawPSS 5.1: Equilibrium problemsLearning Goal:To practice ProblemSolving Strategy 5.1 Equilibrium problemsA 20 loudspeaker is suspended 2.0tension in the ropes?below the ceiling by two ropes that are each 30 from vertical. What is thePROBLEMSOLVING STRATEGY 5.1 Equilibrium problemsPREPARE First check that the object is in equilibrium: Does?An object at rest is in static equilibrium.An object moving at a constant velocity is in dynamic equilibrium.Then identify all forces acting on the object and show them on a freebody diagram. Determine which forces are knownand which you need to solve for.andrequirement isSOLVE An object in equilibrium must satisfy Newtons second law for the case where. In component form, the.You can find the force components that go into these sums directly from your freebody diagram. From these twohttps://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808487/127/20/2015Assignment 3equations, solve for the unknown forces in the problem.ASSESS Check that your result has the correct units, is reasonable, and answers the question.PREPAREDetermine what sort of equilibrium your system is in. Then, draw a freebody diagram and determine usefulrelationships between the forces.Part AWhich of the following statements are correct about the situation described in the introduction?Check all that apply.ANSWER:The loudspeaker is in static equilibrium.The loudspeaker is in dynamic equilibrium.The loudspeaker is not in static equilibrium, because it is not on the ground.The loudspeaker is not in dynamic equilibrium, because it is accelerating.Part BIdentify the forces acting on the loudspeaker and then draw them on the freebody diagram.Draw the vectors starting from the black dot. The location and orientation of the vectors will be graded. Thelength of the vectors will not be graded.ANSWER:https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808488/127/20/2015Assignment 3Part CThis question will be shown after you complete previous question(s).SOLVEUse the conditions for equilibrium to determine the tensions in the two ropes.Part DThis question will be shown after you complete previous question(s).ASSESSDetermine whether your answer makes sense.Part EThis question will be shown after you complete previous question(s).https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=36808489/127/20/2015Assignment 3Problem 5.13A horizontal rope is tied to a 40box on frictionless ice.Part AWhat is the tension in the rope if the box is at rest?Express your answer using two significant figures.ANSWER:=Part BWhat is the tension in the rope if the box moves at a steady 9.0?Express your answer using two significant figures.ANSWER:=Part CWhat is the tension in the rope if the box has= 9.0and= 5.0Express your answer using two significant figures.ANSWER:=Problem 5.17A woman has a mass of 50.0.Part AWhat is her weight on earth?ANSWER:=https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=368084810/127/20/2015Assignment 3Part BWhat is her mass on the moon, where?ANSWER:=Part CWhat is her weight on the moon, where?ANSWER:=Problem 5.23Part AA 0.57bullfrog is sitting at rest on a level log. How large is the normal force of the log on the bullfrog?Express your answer using two significant figures.ANSWER:=Part BA second 0.57bullfrog?bullfrog is on a log tilted 23 above horizontal. How large is the normal force of the log on thisExpress your answer using two significant figures.ANSWER:=Problem 5.25Bonnie and Clyde are sliding 430 bank safe across the floor to their getaway car. The safe slides with a constantspeed if Clyde pushes from behind with 420 of force while Bonnie pulls forward on a rope with 260 of force.https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=368084811/127/20/2015Assignment 3Part AWhat is the safes coefficient of kinetic friction on the bank floor?ANSWER:=Score Summary:Your score on this assignment is 0.0%.You received 0 out of a possible total of 30 points.https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=3680848Top of Form$40.00PurchaseBottom of Form