\"a block slides across a rough horizontal table top. thework done by friction c
ID: 1675088 • Letter: #
Question
"a block slides across a rough horizontal table top. thework done by friction changes:A) only the kinetic energy B) only the potential energy C) only the internal energy D) only the kinetic and potential energies E) only the kinetic and internal energies thankyou "a block slides across a rough horizontal table top. thework done by friction changes:
A) only the kinetic energy B) only the potential energy C) only the internal energy D) only the kinetic and potential energies E) only the kinetic and internal energies thankyou
Explanation / Answer
Friction acts on a body changing both the kinetic andpotential energy, since friction is an external force, It canchange both the potential and kinetic energy even with outwork being done. Normally work done to a system, W is equal to the change inmechanical energy, W=Emec=K+U , butwhen friction is added the work changes due to the addition ofchange in thermal energy, so the work done must be greater,W=Eth+Emec , laws of conservationof energy only allows for the transferal of energy.Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.