Question

Два тела массой m1 = 4 кг и m2 = 5 кг, соединенные струной, движутся с ускорением 1,2 м / с под действием силы F = 50 Н. Каков коэффициент трения между телами и плоскостями?

Answer 1

Ответ:

Объяснение:

дано m=m1+m2=9 кг

a=1,2 м/с2

Fтяг=50 Н

k- ?

Fтяг-Fтр=ma

Fтяг-ma=kmg

k=Fтяг/mg-a/g=0.436

Answer 2

Calculating the Coefficient of Friction

To calculate the coefficient of friction between the two bodies, we can use the following formula:

Coefficient of Friction (μ) = (Force of Friction) / (Normal Force)

Where: - Force of Friction = μ * Normal Force

Given: - Mass of body 1 (m1) = 4 kg - Mass of body 2 (m2) = 5 kg - Acceleration (a) = 1.2 m/s^2 - Force (F) = 50 N

First, we need to calculate the net force acting on the system using the formula:

Net Force (F_net) = Total Mass * Acceleration

Total Mass = m1 + m2

Let's calculate the total mass and the net force.

Total Mass: m1 = 4 kg m2 = 5 kg Total Mass = m1 + m2

Net Force: F_net = Total Mass * Acceleration

Then, we can calculate the force of friction using the formula:

Force of Friction = Coefficient of Friction * Normal Force

Finally, we can calculate the coefficient of friction using the formula mentioned at the beginning.

Let's perform the calculations.