you will hang masses over a pulley to put tension in a string attached to a bloc
ID: 2140705 • Letter: Y
Question
you will hang masses over a pulley to put tension in a string attached to a block on a horizontal surface. The block will move at a constant velocity
The purpose of this lab is to experimentally determine mu k. What is mu k? For the FBDs, Draw the length of the tension and friction force arrows scaled relative to each other. Draw a complete free-body diagram for the block, when the track is horizontal (as will be performed in the lab: with the string attached, sliding across the track at constant velocity). Draw a complete free-body diagram for the same block, when the same track is at an incline with the pulley side elevated. (Again, as to be performed in the lab: with the string attached, and the block sliding up the incline at constant velocity.) Compare the block on the level track to the same block on an incline. Circle the correct statements: N level > N incline N level = N incline N level f incline f level = f incline f levelExplanation / Answer
a)let m1 be the mass on horizontal surface
m2 be the other(hanging)
no net froce ..(no accelaration)
m2g=(uk)m1g
uk=m2/m1
2)length of friction force(left) and tension(right) is same..
3)N normal force perpendilculer to incline mg cos theta opposite to N T up the incline muo*mgcos theta+mgsin theta...down the incline
4)N level > N incline
and f level > f incline
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