Verified Solution • 2025–26 Session moderate

QJEEM20Ph85cc: JEE Main 2020 Physics - Class 11 JEEM20Ph85cc Solution: A person pushes a box on a rough horizontal plateform surface.…

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?

Multiple Choice Options

  • A 5690 J
  • B 5250 J
  • C 2780 J
  • D 3280 J

Step-by-Step Verified Solution

JEE Main 2020 (Online) 4th September Evening Slot Physics - Work Power & Energy Question 88 English Explanation

Work done = area of ABCEO

= area of trapezium ABCD + area of rectangle ODCE

= 12 × 45 × 30 + 100 × 30 = 5250J

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