A person weighing 686 N, standing on the ground, evenly lifts a load weighing 40 kg using a stationary block
| May 20, 2021 | education
A person weighing 686 N, standing on the ground, evenly lifts a load weighing 40 kg using a stationary block. Determine the force of the person’s pressure on the ground while lifting the load.
To determine the value of the pressure force of a given person on the ground, we will project all the forces on the vertical axis: F = Pch – N = Ph – Pr = Rh – mg * g
Constants and variables: Рч – weight of a given person (Рч = 686 N); mg is the mass of the load being lifted (mg = 40 kg); g – acceleration due to gravity (g ≈ 9.8 m / s2).
Calculation: F = Rh – mg * g = 686 – 40 * 9.8 = 294 N.
Answer: A person, while lifting a load, creates a pressure of 294 N.
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