Work, Energy & Power
Class 11 · Work, Energy & Power

Energy Loss to Friction

Block slides on rough floor — KE drops as heat: see d_stop = v₀²/(2μg).

Run simulation

Key Notes

01

Block sliding on rough floor decelerates; KE is dissipated as heat by friction.

02

Stopping distance d = v₀²/(2μg) — independent of mass.

03

Total heat generated = initial KE = ½mv₀².

Formulas

Stopping distance

When friction is the only horizontal force.

Work–energy

Friction work equals KE loss.

Important Points

Doubling v₀ quadruples the stopping distance.

Heat = μ × N × d (kinetic friction × distance).

Energy Loss to Friction notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.