A stone thrown vertically upwards rises to a height of 5 m, and then falls to the starting point. The stone has a mass of 1kg.
| December 19, 2020 | education
A stone thrown vertically upwards rises to a height of 5 m, and then falls to the starting point. The stone has a mass of 1kg. The force of gravity when a stone falls does work. What is a perfect job?
Given: h-5 meters
M-1 kilogram
g-10meters / second ^ 2
Find: A-?
Decision:
A = FScosa, because the stone lands at that place cosa = 0 and it can be ignored. S = h = 5 meters.
F = Mg = 1 * 10 = 10 (n)
We substitute everything into the formula: A = Mg * h; A = 10 * 5 = 50 (joule)
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