Un trabajador de una construcción sube con velocidad constante un cuerpo de 20 kg de masa hasta una altura de 3 m, empleando un tiempo

Question:

Un trabajador de una construcción sube con velocidad constante un cuerpo de 20 kg de masa hasta una altura de 3 m, empleando un tiempo de 10 s en esta actividad. a) ¿Cuál es el valor de la fuerza F Que el trabajador debe ejercer para que el cuerpo suba con velocidad constante?considerar g= 10 m/s2
b) ¿Cuál es el trabajo mecánico que el trabajador realiza en esta operación?
c) ¿Cuál es la potencia que desarrolla el trabajador?

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