Physics, 27.10.2020 16:50 sariyamcgregor66321
Um operário trabalhando em uma obra puxa um saco de cimento por uma rampa, como mostrado na figura abaixo. O operário aplica uma força constante de 2 N paralela ao plano e o saco de cimento percorre 0,8 m com velocidade constante. Logo a massa e o trabalho do peso desse saco de cimento ao final do percurso são, respectivamente.
a) 0,4 Kg e - 1,6 J
b) 4 kg e 6 J
c) 0,4 Kg e 0,8 J
d) 0,4 Kg e - 0,8 J
Answers: 1
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