Work, Power and EnergyMedium
Question
The potential energy for the force 
= yzî + xaĵ + xy
, if the zero of the potential energy is to be chosen at the point (2, 2, 2), is
= yzî + xaĵ + xy, if the zero of the potential energy is to be chosen at the point (2, 2, 2), isOptions
A.8 + xyz
B.8 - xyz
C.4 - xyz
D.4 + xyz
Solution
∵ 
= - 
∴ 
= - xy
Therefore U = - xyz + C where C = constant As at (2, 2, 2), U = 0 so C = 8
OR
Objective question approach : Check that U = 0 at (2, 2, 2)
= - ∴ = - xyTherefore U = - xyz + C where C = constant As at (2, 2, 2), U = 0 so C = 8
OR
Objective question approach : Check that U = 0 at (2, 2, 2)
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
Consider a system of three charges and placed at points A, B and C, respectively, as shown in the figure. Take O to be t...A person trying to lose weight by burning fat lifts a mass of 10 kg upto a height of 1 m 1000 times. Assume that the pot...A block of mass 16 kg is moving on a frictionless horizontal surface with velocity 4m/s and comes to rest after pressing...A small block B of mass m = 0.25 kg, lying on a frictionless horizontal table, is attached to a massless cord (breaking ...Force acting on the particle is (2î + 3ĵ) N work done by this force is zero. When a particle is moved on the l...