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ashleyallred3299
17.09.2019 •
Physics
When you pull on the pulley with a force of 120 n, the pulley applies a force of 800 n to the boxes. what is the mechanical advantage of the pulley?
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Ответ:
800/120=6.67
Ответ:
Correct a₂ > a₁
Explanation:
Given:
Tony mass = m₁ = 50 kg
Sam mass = m₂ = 45 kg
According to Newton's second law, the formula for calculating force is:
F = m · a
In this case we have the same force for both
F = m₁ a₁ = m₂ a₂ => a₁ / a₂ = m₂ / m₁ = 45 / 50 = 9 / 10 = 0.9
a₁ = 0.9 a₂ => a₁ = 90% of a₂ => a₂ > a₁
a₂ > a₁
God is with you!!!