Work, Power and EnergyHard
Question
A particle moves in one dimensional field with total mechanical energy E. If potential energy of particle is then
Options
A.Particle has zero speed where U(x) = E
B.Particle has zero acceleration where U(x) = E
C.Particle has zero velocity where 
= 0
= 0D.Particle has zero acceleration where = 0
= 0Solution
Mechanical energy = kinetic energy + potential energy E = K + U(x) where K = 
mv2
If K = 0 then E = U(x)
If F = 0 then F = -
= 0 ⇒ 
= 0
mv2If K = 0 then E = U(x)
If F = 0 then F = -
= 0 ⇒ = 0Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A 1 Kg ball falls from a height of 25 cm and rebounds upto a height of 9 cm. The co-efficient of restitution is -...Which of the following is a non conservative force:-...A collision is said to be perfectly inelastic when :-...A force F = Kx2 acts on a particle at an angle of 60o with the x-axis. the work done in displacing the particle from x1 ...The potential energy of a particle of mass 1 kg in motion along the x-axis is given by : U = 4(1 - cos2x)J, where x is i...