A person pushes a box on a rough horizontal plateform surface. He applies a force of $$200$$ N over a distance of $$15$$ m. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to $$100$$ N. The total distance through which the box has been moved is $$30$$ m. What is the work done by the person during the total movement of the box?

Question

Infinity Learn · Accepted Answer

∴ Work done $$=$$ Area under curve $$=200$$×$$15+200+100215=3000+2250=5250$$ J

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material