A 6.0 kg block is pushed2.0 m up a vertical wall with constantspeed by a constan

Question

   A 6.0 kg block is pushed2.0 m up a vertical wall with constantspeed by a constant force of magnitude F applied at anangle of = 30° with the horizontal, as shownin the figure below. If the coefficient of kinetic friction betweenblock and wall is 0.30, determine the work done by each of thefollowing.
(a) the force J

(b) gravity
J

(c) the normal force between block and wall
J

(d) By how much does the gravitational potential energy increaseduring the block's motion?

J
(a) the force J

(b) gravity
J

(c) the normal force between block and wall
J

(d) By how much does the gravitational potential energy increaseduring the block's motion?

J

Explanation / Answer

(a) What is the tension in the rope?
N

(b) How much work is done by the rope on the sledge?
kJ

(c) What is the mechanical energy lost due to friction?
kJ

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