A 65 kg student climbs 7 m up a rope at a constant speed. If the students power to output is 300 w, how long does it take the st
1 answer:
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Answer:
h = 40.37 m
Explanation:
We will apply the law of conservation of energy to the skier in this case, as follows:
where,
m = mass of skier = 77 kg
g = acceleration due to gravity = 9.81 m/s²
vf = final speed = 30 m/s
vi = initial speed = 2 m/s
W_friction = Work done by friction and air resistance = 4000 J
Therefore,
<u>h = 40.37 m</u>