O cutie cu masa de 4 kg este ridicata pe o distanta de 1,6m prin aplicarea unei forte constante de 60 N.Cunoscand valoarea acceleratiei gravitationale g=10 m/s^2 sa se calculeze:
a)lucrul mecanic efectuat de forta aplicat;
b)lucrul mecanic efectuat de forta de greutate;
c)viteza finala a cutiei.

Răspunsul a fost dat de: USER3885
30 Agustus 2025 fizica 5 minute
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O cutie cu masa de 4 kg este ridicata pe o distanta de 1,6m prin aplicarea unei forte constante de 60 N.Cunoscand valoarea acceleratiei gravitationale g=10 m/s^2 sa se calculeze:
a)lucrul mecanic efectuat de forta aplicat;
b)lucrul mecanic efectuat de forta de greutate;
c)viteza finala a cutiei.
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LF=F*h LG=m*g*h V2=2*g*h v=√2*g*h
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