What is the power of the mechanism that lifts a 50kg body to a height of 2 meters in 3 seconds?
| December 18, 2020 | education
Given:
m = 50kg
h = 2m
t = 2c
Find N =?
Decision:
N = A / t;
A = F * S;
F = mg;
S = h;
A = mgh;
A = 50kg * 9.9N / kg * 2m = 980N * m = 980J;
N = 980J / 2s = 490 J / s = 490W;
Answer: N = 490W (watt)
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