An 80-kg hiker climbs to the top of a tall hill and builds up 470,000 J of gravitational potential energy. How high did the hike
2 answers:
Answer:
599.5 m
Explanation:
The gain in gravitational potential energy of the man is given by:
where
m is the man's mass
g is the gravitational acceleration
is the change in height of the hiket
In this problem, we have the following data:
U = 470,000 J
g = 9.8 m/s^2
m = 80 kg
Solving the formula for , we find:
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Answer:
The tension is
Explanation:
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The distance between the two poles is
The mass tied between the two cloth line is
The distance it sags is
The objective of this solution is to obtain the magnitude of the tension on the ends of the clothesline
Now the sum of the forces on the y-axis is zero assuming that the whole system is at equilibrium
And this can be mathematically represented as
To obtain we apply SOHCAHTOH Rule
So
