A child pushes a toy box 5.0 m along the floor with a force of 7.0 N directed downward
at an angle of 30.0° to the horizontal. (a) How much work does the child do? (b) Would
you expect more or less work to be done if the child pulled upward at the same angle?
2 answers
please, i need the answer ASAP
the force in the direction of motion is ... 7.0 N * cos(30º)
(a) w = 7.0 N * cos(30º) * 5.0 m
(b) less ... pulling upward reduces the frictional force
(a) w = 7.0 N * cos(30º) * 5.0 m
(b) less ... pulling upward reduces the frictional force
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