A boxed 10.0 kg computer monitor is dragged by friction 5.50 m up along the moving...
Homework Answers
the height raised by it is h = 5.50sin35.9
so work done by gravitational force is -mgh = - 316.0547 J
now for calculating work done by friction applying work energy principle
that is work done by external forces is equal to change in kinetic energy
since change in kinetic energy is zero
so work done by friction = - work done by gravity = 316.0547 J
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