#$&*
Phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Midpoint clocktimes
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5, .344, .512, .875
50, .517, 1.059, 2.402
65, .594, .777, 1.114
85, .434, .605, .963
110, .313, .469, .543, .641
130, .578, .844, 1.063
70, .422, .480, .703
150 , .500, 1.063, 2.121
These are the clocktimes I'm using for the analysis of angular velocity.
I used which ever average velocity they asked. Then I took the specified clocktime divided by 2 then added it to the previous clocktime.
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I assume that this is the data you observed for the strap.
It appears that you are reporting time intervals for 180-degree intervals, as opposed to the clock times at which those intervals end.
Your description of the calculation might or might not be correct; there are two ways of interpreting what you say.
Can you calculate the midpoint clock times for the first line, and show the detailed calculation and your reasoning?
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#$&*
Phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Force Vectors
** **
Draw to scale the force vectors corresponding to the rubber band forces, determine their components and find their sum. Note carefully that you are drawing force vectors here, NOT the lengths of the rubber bands. You are now done with the lengths of the rubber bands. Those lengths were only used to find the forces and they are no longer important.
1. Using a scale of 4 cm per Newton sketch the vector representing the force exerted by each rubber band (the force, not the length of the rubber band). Use a different color or style for the vector corresponding to each rubber band; you might use pens of different colors, or you might use pencil for one, pen for another, and another pen with a different color; or you could use a line which is thicker or thinner than the other lines..
2. Each vector should have its initial point at the origin, should lie along the line of force and be directed in the direction of the force exerted on the paper clip by the rubber band. The first figure below illustrates three vectors representing forces of roughly 1.5 Newtons, .6 Newtons and 1.8 Newtons.
3. Now draw the projection lines, sketch the component vectors, and validate the components as calculated using the sines and cosines of the angles: From the tip of each vector sketch the projection lines back to the x axis and to the y axis. Be sure the projection lines run parallel to the grid lines and use a straightedge to locate the projection lines as accurately as possible.
4. Using the same colors and/or line styles you used to sketch the vectors, sketch the component of each of the force vectors along the x and y axes, as shown in the second figure below.
5. Measure the length of each of these components, and using the 4 cm to 1 Newton scale determine as accurately as possible how many Newtons are represented by each component. In the figure below, for example, it looks like the red vector in the first quadrant has components measuring 1.4 cm in the x direction and about 5.8 cm in the y direction. These forces would correspond to .35 Newtons and 1.45 Newtons.
I'm not sure exactly how or what to use to get this measurement??
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@&
To get these measurements you need to have made the sketch according to instructions.
Pick one of your forces.
What is the magnitude of your force in Newtons?
What is its angle with the positive x axis?
How long did you make the vector when you sketched it?
How long is each of the projection lines in your sketch?
According to your scale, what therefore is the magnitude of each projection?
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@&
Reply by form, but also use email so I can respond as quickly as possible.
*@
#$&*
Phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Force Vectors
** **
Draw to scale the force vectors corresponding to the rubber band forces, determine their components and find their sum. Note carefully that you are drawing force vectors here, NOT the lengths of the rubber bands. You are now done with the lengths of the rubber bands. Those lengths were only used to find the forces and they are no longer important.
1. Using a scale of 4 cm per Newton sketch the vector representing the force exerted by each rubber band (the force, not the length of the rubber band). Use a different color or style for the vector corresponding to each rubber band; you might use pens of different colors, or you might use pencil for one, pen for another, and another pen with a different color; or you could use a line which is thicker or thinner than the other lines..
2. Each vector should have its initial point at the origin, should lie along the line of force and be directed in the direction of the force exerted on the paper clip by the rubber band. The first figure below illustrates three vectors representing forces of roughly 1.5 Newtons, .6 Newtons and 1.8 Newtons.
3. Now draw the projection lines, sketch the component vectors, and validate the components as calculated using the sines and cosines of the angles: From the tip of each vector sketch the projection lines back to the x axis and to the y axis. Be sure the projection lines run parallel to the grid lines and use a straightedge to locate the projection lines as accurately as possible.
4. Using the same colors and/or line styles you used to sketch the vectors, sketch the component of each of the force vectors along the x and y axes, as shown in the second figure below.
5. Measure the length of each of these components, and using the 4 cm to 1 Newton scale determine as accurately as possible how many Newtons are represented by each component. In the figure below, for example, it looks like the red vector in the first quadrant has components measuring 1.4 cm in the x direction and about 5.8 cm in the y direction. These forces would correspond to .35 Newtons and 1.45 Newtons.
I'm not sure exactly how or what to use to get this measurement??
** **
@&
To get these measurements you need to have made the sketch according to instructions.
Pick one of your forces.
What is the magnitude of your force in Newtons?
What is its angle with the positive x axis?
How long did you make the vector when you sketched it?
How long is each of the projection lines in your sketch?
According to your scale, what therefore is the magnitude of each projection?
*@
@&
Reply by form, but also use email so I can respond as quickly as possible.
*@