Physics · JEE

The potential energy of a spring, conservation of mechanical energy, conservative and non-conservative forces Mock Test for JEE

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Q1PhysicsUnit 4: Work, Energy and Power

A single conservative force

F(x)

acts on a

1.0-k g

particle that moves along the x-axis. The potential energy

U(x)

\operatorname{given} \operatorname{by} U(x)=20+(x-2)^{2}

where

x

is in meters. At

\boldsymbol{x}=\mathbf{5 . 0} \mathrm{m},

the particle has a kinetic energy of 20 J.What is the mechanical energy of the system?

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