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
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