A mass m = 17 kg is pulled along a horizontal floor, with a coefficient of kinet

Question

A mass m = 17 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.06, for a distance d = 6.6 m. Then the mass is continued to be pulled up a frictionless incline that makes an angle ? = 33 with the horizontal. The entire time the massless rope used to pull the block is pulled parallel to the incline at an angle of ? = 33 (thus on the incline it is parallel to the surface) and has a tension T = 45 N.

1)

What is the work done by tension before the block gets to the incline?

J  

2)

What is the work done by friction as the block slides on the flat horizontal surface?

J  

Your submissions:

6.6

Computed value:

6.6

Submitted:

Sunday, March 8 at 8:05 PM

Feedback:

3)

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

m/s  

4)

How far up the incline does the block travel before coming to rest?

m  

5)

What is the work done by gravity as it comes to rest?

J  

6)

During the entire process, the net work done on the block is:

positive

negative

zero

(Please give me the CORRECT ANSWERS)

A mass m = 17 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.06, for a distance d = 6.6 m. Then the mass is continued to be pulled up a frictionless incline that makes an angle ? = 33½ with the horizontal. The entire time the massless rope used to pull the block is pulled parallel to the incline at an angle of ? = 33½ (thus on the incline it is parallel to the surface) and has a tension T = 45 N. 1) What is the work done by tension before the block gets to the incline? J 2) What is the work done by friction as the block slides on the flat horizontal surface? J Your submissions: 6.6 Computed value: 6.6 Submitted: Sunday, March 8 at 8:05 PM Feedback: 3) What is the speed of the block right before it begins to travel up the incline? m/s 4) How far up the incline does the block travel before coming to rest? m 5) What is the work done by gravity as it comes to rest? J 6) During the entire process, the net work done on the block is: positive negative zero (Please give me the CORRECT ANSWERS)

Explanation / Answer

1) The force pulling the block is 45*cos33

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