Question bank/JEE Main/Physics

The displacement x of a body of mass 1 kg on horizontal smooth
surface as function of time t is given by x =[IMAGE].
The work done in the first one second is

A[IMAGE] t 1 kg
x x =[IMAGE]

Show answer and solution▾

dW = F.dx
x =[IMAGE] v =[IMAGE] = t3 ⇒ dx = t3dt
[IMAGE] = 3t2
[IMAGE] t3 dt
TOPIC: WPE
SUB TOPIC: WORK DONE BY VARIABLE FORCE

Source: Grass-G / P-04 Paper 2 (Physics) Eng.+ Hindi 24-8-2020.docx