Question

ПОМОГИТЕ ПОЖАЛУЙСТА найти массу тела, если минимальная сила притяжения к телу для движения равна 0,03 кн а коэффициент трения равен 0,025​

Answer 1

Ответ:

120кг

Объяснение:

F=0,03кН=30Н

u=0,025

РЕШЕНИЕ:

Fтр=F

u*N=F (N-сила реакции опоры)

N=mg

u*m*g=F

m=F/u*g

m=30/0,025*10=120(кг)

Answer 2

Finding the Mass of an Object

To find the mass of an object given the minimum force of attraction for movement and the coefficient of friction, we can use the formula:

Minimum force of attraction (F) = Coefficient of friction (μ) × Normal force (N)

Where the normal force (N) is equal to the weight of the object, which is given by the formula:

Weight (W) = Mass (m) × Acceleration due to gravity (g)

By rearranging the formulas, we can find the mass of the object using the given information.

Calculation

Given: - Minimum force of attraction (F) = 0.03 kN - Coefficient of friction (μ) = 0.025

We can use the formula for the minimum force of attraction to find the normal force (N): F = μ × N

Rearranging for N: N = F / μ

Now, we can use the formula for weight to find the mass: W = m × g

Rearranging for mass: m = W / g

Solution

First, let's find the normal force (N): N = F / μ N = 0.03 kN / 0.025 N = 1.2 kN

Next, we can find the weight (W) using the normal force and the acceleration due to gravity: W = N W = 1.2 kN W = 1200 N

Now, we can find the mass (m) using the weight and the acceleration due to gravity: m = W / g m = 1200 N / 9.81 m/s^2 m ≈ 122.15 kg

So, the mass of the object is approximately 122.15 kilograms.