JEE Main Physics question

PhysicsWork, Energy and PowerJEE Main

The potential energy of a body is given by, U = A − Bx² (where x is the displacement). The magnitude of force acting on the particle is [BHU 2002]

Answer: (B)

Solution

F = −dU/dx = −(−2Bx) = 2Bx, so F ∝ x.

Question ID VK-153886