Forces that are not applied in the direction of movement does no work.
The movement is horizontal.
a. Work = F*d = 12*cos25 * 2.8 = 30.5 J.
12*cos25 = Hor. component of applied force.
b. No work done.
c. No work done.
d. Same as a.
A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 12.0 N force directed 25.0° below the horizontal.
(a) Determine the work done by the applied force.
J
(b) Determine the work done by the normal force exerted by the table.
J
(c) Determine the work done by the force of gravity.
J
(d) Determine the work done by the net force on the block.
J
1 answer
1 answer