PHY 201
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An object moving in the direction 120 degrees (as measured counterclockwise to the positive x axis) encounters a net force whose direction is 270 degrees.
• Sketch the force and its component along the line of motion, as well as its component perpendicular to the line of motion.
answer/question/discussion: ->->->->->->->->->->->-> :
When I put the vector line of motion, I also put the net force vector. Then, after that I drew a line that was a component of the force, but also was perpendicular to the vector of motion, and also drew a line that was a component of the force, but is along the vector of motion.
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• Suppose you are facing in the direction of motion. Do you perceive the component of the force along the line of motion to be forward or backward? Is this component in the direction of motion or opposite to the direction of motion?
answer/question/discussion: ->->->->->->->->->->->-> :
If you were standing in the direction of motion, then the component of the force along the line of motion would be backward. It is opposite in the direction of motion, but it along the side of the line of motion.
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• Will the object speed up, slow down or maintain a constant speed?
answer/question/discussion: ->->->->->->->->->->->-> :
I think that the object will maintain a constant speed.
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• If you are facing in the direction of motion, then the line perpendicular to the direction of motion will run to your right and to your left. Is the component of the force perpendicular to the line of motion directed to the right or to the left?
answer/question/discussion: ->->->->->->->->->->->-> :
The component of the force perpendicular to the line motion is directed to the left of the line of motion.
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• Will the object veer to the right, to the left or maintain straight-line motion?
answer/question/discussion: ->->->->->->->->->->->-> :
I think that the object will veer to the left, which is where the net force is going.
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• Which is greater in magnitude, the component of the force along the line of motion or the component perpendicular to the line of motion?
answer/question/discussion: ->->->->->->->->->->->-> :
I think that the component along the line of motion will have a greater magnitude, because the perpendicular component is closer to the x-axis.
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30 Minutes
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Solution
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