A block of mass 2.90 kg is pushed2.60 m along a frictionless horizontaltable by

Question

A block of mass 2.90 kg is pushed2.60 m along a frictionless horizontaltable by a constant 16.0 N force directed 27.0° belowthe horizontal.

(a) Determine the work done on the block by theapplied force.
1 J

(b) Determine the work done on the block by the normal forceexerted by the table.
2 J

(c) Determine the work done on the block by the gravitationalforce.
3 J

(d) Determine the total work done on the block.
4 J (a) Determine the work done on the block by theapplied force.
1 J

(b) Determine the work done on the block by the normal forceexerted by the table.
2 J

(c) Determine the work done on the block by the gravitationalforce.
3 J

(d) Determine the total work done on the block.
4 J

Explanation / Answer

mass m = 2.9 kg distance S = 2.6 m force F = 16 N angle = 27 degrees (a).the work done on the block by the applied force = Fcos * S                                                                            W = 37.06 J


(b) the work done on the block by the normal force exerted bythe table W ' = 0 J
Since normal force and displacement are perpendicular to eachother

(c) the work done on the block by the gravitational force W " = 0J Since gravitational force and displacement areperpendicular to each other
(d)the total work done on the block = W + W '+ W " = 37.06 J

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