The bar moves along a horizontal surface. If the force of normal pressure is reduced by 2 times
| August 11, 2021 | education
The bar moves along a horizontal surface. If the force of normal pressure is reduced by 2 times, then the force of sliding friction.
To find the change in the magnitude of the sliding friction force, we use the ratio: k = Ftr2 / Ftr1 = μ * Nк / (μ * Nн) = Nк / Nн.
Variable ratios: Nk (reduced normal pressure force) = 0.5Nn (initial normal pressure force).
Calculation: k = Nc / Nn = 0.5Nn / Nn = 1/2.
Answer: The sliding friction force should be halved.
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