JEE Main202118 Mar 2021Morning ShiftPhysicsWork, Power and EnergyActual
As shown in the figure, a particle of mass 10   kg is placed at a point A . When the particle is slightly displaced to its right, it starts moving and reaches the point B . The speed of the particle at B is x   m   s - 1 . (Take g = 10   m   s - 2 The value of x to the nearest integer is
Correct answer
0
Step-by-step solution
Using work-energy theorem, W g = Δ K . E . ( 10 ) ( g ) ( 5 ) = 1 2 ( 10 ) v 2 - 0 v = 10   m   s - 1 .