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Interactive Exercises 5.01: Vector Addition of Forces Here is some practice finding the net force acting on a particle. The simulation (linked below) shows an overhead view of a hockey puck that is initially at rest on an ice rink. The puck is located at the origin of an xy coordinate system. One person applies force blue arrow with fixed magnitude and direction acts on the puck particle at the origin. Another person applies a second force F2 (blue arrow) on the particle, and the magnitude and direction of F 2 can be varied. You do so in the simulation by clicking and dragging the cursor in the window (see the light gray, small circle with a superimposed cross). The x and y components of the net force on the particle are displayed as well as an arrow that represents Fnet itself (see the black arrow). The x and y components of the variable force F2 are also displayed. Simulation Practice with Vector Addition of Forces ▼ Question 1 What components of F2 result in the puck remaining at rest at the origin? F. By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Attempts: 0 of used E FOR LATER SUBMIT ANSWER SUBMIT ANSWER

▼ Question 2 What are the components of the fixed force F1? Fix = Fly By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor Attempts: 0 of 5 used SAVE FOR LATER SUBMIT ANSWER SUBMIT ANSWER Question 3 Suppose you adjust the force F2 such that the net force, and so the acceleration, of the hockey puck points in the -x direction. Also, the net force has magnitude 10 N. What are the components of F2? 2y

Question 4 Now, a third force F3 acts on the puck. The fixed force Fi and the force F2 from question 3 still act on the puck. It is observed in this case that the net force on the puck is Fne What is the force F3 in unit-vector notation? Enter numerical values in the boxes below. (ION)j By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor Attempts: o of S used SAVE FOR LATER SUBMIT ANSWER SUBMIT ANSWER

net,x-4.00N, Fnet,y--8.00NF2,x-10.00 N, F2,y -0.00N 20 10 x (N) -20 10 10 -10 20 Practice with Vector Addition of Forces This graphic shows an overhead view of a hockey puck that is initially at rest on an ice rink. The puck is located at the origin of an xy coordinate system. One person applies force F1 (blue arrow) with fixed magnitude and direction on the puck (particle) at the origin. Another person applies a second force F2 (blue arrow) on the particle, and the

magnitude and direction of F2 can be varied. You do so in the graphic by clicking and dragging the cursor in the window (see the light gray, small circle with a superimposed cross). The x and y components of the net force on the particle are displayed as well as an variable force F, are also displayed.

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