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Unit 3 Quiz#3

 

1. Utilize a scaled vector diagram in order to determine the resultant (both the magnitude and the direction) of the following two forces. NOTE: The two forces are not at right angles.

50 N, 135 degrees
70 N, 300 degrees

 

On your diagram, be sure to indicate the scale, place arrowheads on all vectors, label the magnitude and direction of each vector, and clearly label the resultant.


Useful Web Links

Addition of Forces (19 seconds)

 

2. Add at least two forces to each of the following three objects so that the objects will be at equilibrium. Each force which you add must either be horizontal or vertical. Clearly label their magnitude and indicate their direction by a clearly drawn arrowhead.


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Resolution of Forces (22 seconds)

Equilibrium and Statics (23 seconds)

 

3. On the following diagrams, fill in all blanks and determine the acceleration (both magnitude and direction) of the object. Clearly show your calculation for the acceleration.

Diagram A

Acceleration = _________

Calculations:

 

 

 

Diagram B

Acceleration = _________

Calculations:

 

 


Useful Web Links

Types of Forces (8 seconds)

Free-Body Diagrams (8 seconds)

Resolution of Forces (22 seconds)

Net Force Problems Revisited (17 seconds)

 

 

4. For Diagram B above, determine the distance which the object will be moved if the forces act upon the object for 2.0 seconds. The object is initially at rest. PSYW


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The Kinematic Equations (5 seconds)

Kinematic Equations and Problem-Solving (7 seconds)

 

 

5. Consider the free-body diagram on the right and the position-time and velocity-time graphs below. Which one(s) of the graphs below would be a possible representation of the motion of the object depicted in the free-body diagram? Circle any correct graphs. For the incorrect graphs, clearly explain what is incorrect using complete sentences.

 

 

 


Useful Web Links

The Meaning of Shape for a p-t Graph (14 seconds)

The Meaning of Shape for a v-t Graph (8 seconds)

Free-Body Diagrams (8 seconds)

Equilibrium and Statics (23 seconds)

 

 

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Special thanks to lab assistant Carl Bobis for his assistance in converting quiz to HTML format.

© Tom Henderson, 1996-1999


Glenbrook South High School.

Last updated on 10/18/99.