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How to Draw a Force Diagram
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Transcript of How to Draw a Force Diagram
![Page 1: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/1.jpg)
How to Draw a Force Diagram to Find the Net Force Acting on an
Object
![Page 2: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/2.jpg)
• First, identify the object (or the system of objects) which you wish to study.
• In this example, our system will be Ms. Clanton standing still in the physical science classroom
![Page 3: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/3.jpg)
• Next, draw a rectangle or a circle to represent the object (or system of objects) which you are studying.
• Draw a dashed circle around the object you are studying; the dashed circle represents the system you are studying. Only the object (or system) you are studying is in the dashed circle; everything else is outside.
![Page 4: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/4.jpg)
• Next, draw a rectangle or a circle to represent the object (or system of objects) which you are studying.
• Draw a dashed circle around the object you are studying; the dashed circle represents the system you are studying. Only the object (or system) you are studying is in the dashed circle; everything else is outside.
![Page 5: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/5.jpg)
• Then, draw everything which touches the object (or system of objects) which you are studying.
![Page 6: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/6.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
![Page 7: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/7.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
![Page 8: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/8.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
Contact Force:
Support Force
![Page 9: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/9.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
Contact Force:
Support Force
Support Force
sF
![Page 10: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/10.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
Support Force
sF
![Page 11: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/11.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
Support Force
sF
Gravity always pulls down on an object if
the object is at or near the surface of
the earth.
![Page 12: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/12.jpg)
• Next, identify any forces which are acting on the object you are studying.– At least one contact
force acts at each point where the object you are studying is touched.
– Identify any forces which act at a distance (gravity, for instance).
Support Force
sF
Gravity always pulls down on an object if
the object is at or near the surface of
the earth.
Force of Gravity
gF
![Page 13: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/13.jpg)
• Finally, you can find the net force acting on the object you are studying by adding up all of the force vectors in the diagram.
• For this example, the force vectors are equal in size but opposite in direction. So, they cancel out.
• The net force acting on the object we are studying is zero.
Support Force
sF
Force of Gravity
gF
![Page 14: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/14.jpg)
• Finally, you can find the net force acting on the object you are studying by adding up all of the force vectors in the diagram.
• For this example, the force vectors are equal in size but opposite in direction. So, they cancel out.
• The net force acting on the object we are studying is zero.
Support Force
sF
Force of Gravity
gF
![Page 15: How to Draw a Force Diagram](https://reader036.fdocuments.net/reader036/viewer/2022082511/54582ff7b1af9fba5d8b4b9a/html5/thumbnails/15.jpg)
• Finally, you can find the net force acting on the object you are studying by adding up all of the force vectors in the diagram.
• For this example, the force vectors are equal in size but opposite in direction. So, they cancel out.
• The net force acting on the object we are studying is zero.
Support Force
sF
Force of Gravity
gFNet Force = 0