In: Physics
A 1000-kg elevator is moving downwards in a skyscraper, with constant velocity. The elevator moves a total distance of 400 m. What is the work done on the elevator cage by the tension of the suspension cable? Take g=9.81 m/s2.
Work done by an object is the magnitude of force multiplied by the distance the object moves,in the direction of force.
work is a scalar quantity.
the negative sign shows that the direction of force and displacement,both are in opposite direction.