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stepan [7]
3 years ago
8

Um corpo de massa 2,5kg é lançado verticalmente para cima. Se o sistema for considerado conservativo e no instante em que ele é

lançado sua energia mecânica vale 150 Joules, qual o valor para a energia mecânica no ponto de altura máxima que este corpo atinge, em joules. Considere g = 10m/s2?
Physics
1 answer:
kvv77 [185]3 years ago
7 0

Answer:

Energia mecânica = 300 Joules

Mechanical Energy = 300 Joules

Explanation:

given

m = 2.5kg

g=10m/s²

h=?

K.E = P.E

K.E = 150Joules

¹/₂mv² = m ×g ×h

150 J = 2.5 × 10 × h

h = 150/25

h= 6m

Mechanical energy = K.E + P.E

ME = 2 × 150 J

Mechanical Energy = 300Joules

dado

m = 2,5 kg

g = 10m / s²

h =?

K.E = P.E

K.E = 150Joules

¹ / ₂mv² = m × g × h

150 J = 2,5 × 10 × h

h = 150/25

h = 6m

Energia mecânica = K.E + P.E

ME = 2 × 150 J

Energia mecânica = 300Joules

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