A mass m = 17 kg is pulled along a horizontal floor with NO friction for...

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Physics

A mass m = 17 kg is pulled along a horizontal floor with NOfriction for a distance d =5.7 m. Then the mass is pulled up anincline that makes an angle θ = 34° with the horizontal and has acoefficient of kinetic friction μk = 0.38. The entire time themassless rope used to pull the block is pulled parallel to theincline at an angle of θ = 34° (thus on the incline it is parallelto the surface) and has a tension T =83 N.

What is the work done by tension before the block goes up theincline? (On the horizontal surface.)

What is the speed of the block right before it begins to travelup the incline?

What is the work done by friction after the block has traveled adistance x = 2.6 m up the incline? (Where x is measured along theincline.)

What is the work done by gravity after the block has traveled adistance x = 2.6 m up the incline? (Where x is measured along theincline.)

How far up the incline does the block travel before coming torest? (Measured along the incline.)

Answer & Explanation Solved by verified expert
4.4 Ratings (948 Votes)
Part AWorkdone is given byW1 Fd Fdcos Force done by tension before block goes up the incline willbe angle betweenforce applied and displacement 34 degT Tension applied 83 Nd displacement on horizontal surface 57 mSoW1 8357cos 34 degW1 3922 JPart BUsing Workenergy theoremW1 dKEW1 KEf KEiKEi 0 since block starts from restKEf 12mV2V speed of block right before it begins to travel up theincline    See Answer
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