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version 1.1, 2011/11/26 02:12:45
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version 1.2, 2012/02/28 22:42:34
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Line 6 $massy=2.1+$slope*$massx;
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Line 6 $massy=2.1+$slope*$massx;
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| $angle=180.*atan($slope)/$pi; |
$angle=180.*atan($slope)/$pi; |
| $perp=$angle+90.;</script> |
$perp=$angle+90.;</script> |
| <startouttext /> |
<startouttext /> |
| A mass is sliding down the indicated incline with a constant velocity. Construct the free body diagram, making sure the forces are approximately proportionally correct. Leave unused vectors unattached.<br /> <endouttext /> |
A mass is sliding down the indicated incline with a constant velocity. Construct the free body diagram, making sure the forces are approximately proportionally correct. Leave unused vectors unattached.<br /> |
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<i>You can use the red-colored vector sum tool to help you construct your diagram; check the boxes for the vectors you want included in the sum. The tool is just there to help you, its settings are not graded.</i> |
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<br /> |
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<endouttext /> |
| <functionplotresponse xaxisvisible="no" xlabel="x" gridvisible="yes" ylabel="y" id="11" xmax="10" yaxisvisible="no" xmin="0" ymin="0" ymax="10" width="450" height="450"> |
<functionplotresponse xaxisvisible="no" xlabel="x" gridvisible="yes" ylabel="y" id="11" xmax="10" yaxisvisible="no" xmin="0" ymin="0" ymax="10" width="450" height="450"> |
| <functionplotelements> |
<functionplotelements> |
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| <backgroundplot function="$function" fixed="yes" /> |
<backgroundplot function="$function" fixed="yes" /> |
| <plotobject label="Mass" x="$massx" y="$massy" /> |
<plotobject label="Mass" x="$massx" y="$massy" /> |
| <plotvector label="Gravity" tailx="6" taily="1" tipx="9" tipy="1" /> |
<plotvector label="Gravity" tailx="7" taily="1" tipx="8" tipy="1" /> |
| <plotvector label="KineticFriction" tailx="6" taily="2" tipx="9" tipy="2" /> |
<plotvector label="KineticFriction" tailx="7" taily="2" tipx="8" tipy="2" /> |
| <plotvector label="StaticFriction" tailx="6" taily="3" tipx="9" tipy="3" /> |
<plotvector label="StaticFriction" tailx="7" taily="3" tipx="8" tipy="3" /> |
| <plotvector label="NormalForce" tailx="6" taily="4" tipx="9" tipy="4" /> |
<plotvector label="NormalForce" tailx="7" taily="4" tipx="8" tipy="4" /> |
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<drawvectorsum label="Sum" tailx="$massx" taily="$massy" vectorlist="Gravity,KineticFriction,StaticFriction,NormalForce" /> |
| </functionplotelements> |
</functionplotelements> |
| <functionplotruleset> |
<functionplotruleset> |
| <functionplotvectorrule index="Grav" vector="Gravity" attachpoint="Mass" angle="270" angleerror="2" /> |
<functionplotvectorrule index="Grav" vector="Gravity" attachpoint="Mass" angle="270" angleerror="2" /> |
| <functionplotvectorrule index="Norm" vector="NormalForce" attachpoint="Mass" angle="$perp" angleerror="3" /> |
<functionplotvectorrule index="Norm" vector="NormalForce" attachpoint="Mass" angle="$perp" angleerror="4" /> |
| <functionplotvectorrule index="KFriction" vector="KineticFriction" attachpoint="Mass" angle="$angle" angleerror="2" /> |
<functionplotvectorrule index="KFriction" vector="KineticFriction" attachpoint="Mass" angle="$angle" angleerror="3" /> |
| <functionplotvectorrule index="SFriction" vector="StaticFriction" notattachpoint="Mass" /> |
<functionplotvectorrule index="SFriction" vector="StaticFriction" notattachpoint="Mass" /> |
| <functionplotvectorsumrule vectors="Gravity,NormalForce,KineticFriction" length="0" lengtherror="1" index="Total" /> |
<functionplotvectorsumrule vectors="Gravity,NormalForce,KineticFriction" length="0" lengtherror="2" index="Total" /> |
| </functionplotruleset> |
</functionplotruleset> |
| <hintgroup showoncorrect="no"> |
<hintgroup showoncorrect="no"> |
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Line 36 A mass is sliding down the indicated inc
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Line 39 A mass is sliding down the indicated inc
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| <hintpart on="Total"> |
<hintpart on="Total"> |
| <startouttext />What should be the net force on the mass?<endouttext /> |
<startouttext />What should be the net force on the mass?<endouttext /> |
| </hintpart> |
</hintpart> |
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<hintpart on="Norm"> |
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<startouttext />What should be the direction of the normal force?<endouttext /> |
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</hintpart> |
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| </hintgroup> |
</hintgroup> |
| </functionplotresponse> |
</functionplotresponse> |
| </problem> |
</problem> |
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