PhysicsLAB Worksheet
Freebody Diagrams #1

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Refer to the following information for the next two questions.

 
True or False: This freebody diagram would only apply to an object resting on a supporting surface.
 
If the mass of this object equals 5 kg, what is the magnitude of the normal force exerted on it by the supporting surface? 

Refer to the following information for the next two questions.

 
True or False:  According to this freebody diagram, the object is accelerating to the right on a frictionless, supporting surface.
 
If this object weighs 49 N and the applied force equals 10 N, what is the magnitude of the resulting acceleration? 

Refer to the following information for the next two questions.

 
True or False: According to this freebody diagram, the object is moving at a constant velocity, towards the left, across a supporting surface in the presence of friction.
 
If this object weighs 49 N and the applied force equals 10 N, what is the magnitude of the frictional force present between the object and the supporting surface? 

Refer to the following information for the next two questions.

 
Which choice is correct? This object would be



 
The object weighs 49 N and the frictional force between it and the supporting surface equals 10 N.  If the applied force is reduced to 6 N, what is the magnitude of the resulting acceleration? 

Refer to the following information for the next two questions.

 
Which choice is correct? This object is



 
The object weighs 49 N and the frictional force between it and the supporting surface equals 10 N.  If the applied force is removed, what is the magnitude of the resulting acceleration? 

Refer to the following information for the next two questions.

 
Which choice is correct? This object is



 
A second object weighing 29.4 N replaces the original 5 kg mass. As a direct consequence of the reduced mass, the retarding frictional force is now 6 N. Once again a horizontal force equaling 10 N is applied. What is the magnitude of the resulting acceleration? 

Refer to the following information for the next two questions.

 
True or False: This freebody diagram would only apply to an object being raised vertically at a constant velocity.
 
If the mass of this object equals 3 kg, what is the magnitude of the tension in the string? 

Refer to the following information for the next two questions.

Which choice is correct? This object could be



 
The 3 kg object now experiences an acceleration of - 4 m/sec2. What is the tension in the string? 

Refer to the following information for the next question.

True or False: This freebody diagram could apply to an object in freefall only while it is descending.
 
Refer to the following information for the next two questions.

Which choice is correct? This object would be



 
The 3 kg object now experiences an acceleration of  4 m/sec2. What is the tension in the string? 




 
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