A block of mass 2.50 kg is pushed 2.40 m along a frictionless horizontal table by a constant 18.0 N force directed 25.0° below the horizontal.
(a) Determine the work done by the normal force exerted by the table.
(b) Determine the work done by the force of gravity.
(c) Determine the work done by the net force on the block.
Please Show your work. Thank You Very Much!!!!!!!
2006-11-20 10:38:37 · 3 answers · asked by Tennis2127 2 in Science & Mathematics ➔ Physics
a) The table does no work because the force does not go through a distance.
b) Gravity does no work because the block does not change elevation (the table is horizonal).
c) The work done is 2.4 * 18 * cos(25 degrees) newton meters. It's just the force times the distance. The mass of the block doesn't matter.
.906307787 * 2.4 * 18 = 39.152 newton meters.
2006-11-20 10:45:33 · answer #1 · answered by kimmyisahotbabe 5 · 1⤊ 0⤋
Well...I can help you..but I won't solve it for you...then you learn nothing...I'm a Physics Major...
2006-11-20 18:40:34 · answer #2 · answered by justsinginrain87 3 · 0⤊ 2⤋
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2006-11-20 18:39:43 · answer #3 · answered by rogue chedder 4 · 0⤊ 0⤋