Modelová Otázka ID 2688 - 
Schodiště do prvního patra se skládá ze 14 schodů, přičemž každý schod je 25 cm vysoký a 30 cm dlouhý. Jak velkou potenciální energii získá člověk o hmotnosti 80 kg, který po těchto schodech do prvního patra vyjde, jestliže tak učiní za 15 s?
Správná odpověď je: B
Vzhledem k položené otázce není třeba uvažovat práci, kterou člověk musí vykonat, aby schodiště vyšel. Změnu potenciální energie lze určit jako 
, kde Δh je výškový rozdíl přízemí a prvního patra, který je rovný součinu počtu a výšky schodů, tedy:
Δh = N · l = 14 · 0,25 m = 3,5 m.
Díky přesunu do prvního patra tak člověk získá potenciální polohovou energii o velikosti:
ΔEP = m · g · Δh = 80 kg · 10 m · s−2 · 3,5 m = 800 N · 3,5 m = 2 800 J = 2,8 kJ.
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