Block in the figure weighs 1.40 and block weighs 3.80 . The coefficient of kinet

Question

Block in the figure weighs 1.40 and block weighs 3.80 . The coefficient of kinetic friction between all surfaces is 0.400. (Figure 1)
Part A
Find the magnitude of the horizontal force necessary to drag block to the left at a constant speed of 7.00 if rests on and moves with it (figure a).
=



Part B
Find the magnitude of the horizontal force necessary to drag block to the left at a constant speed of 7.00 if is held at rest by a string (figure b).
=


Part C
In part (A), what is the friction force on block ?
=

Explanation / Answer

please post the figure. without it its not possible to solve. rate me A+

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