Until the object starts to move, the static coefficient of friction must be used since the object is at rest initially. If the horizontal force is large enough to overcome the friction force and the object accelerates, we switch to the kinetic coefficient.
The total downward force in the -y direction is the weight plus the applied 26N:
Fy=mg-26N = 5*-9.81-26 = -75.05N
The maximum friction force here is the magnitude of this force times the static coefficient of friction. This force will point in the opposite direction as an applied horizontal force, no matter which way it points (non conservative forces tend to oppose motion in all directions)
Ff=75.05N*1.03=77.3N
Note this is greater than the applied horizontal x-directed force of 26N. This means the answer is 26N of friction force acting on the object. Why not the full 77.3N? Because that is the maximum amount you can oppose along the x-direction before the object starts to move. But since we are only applying 26N, that is all the friction force pushes back with. This is a statement of Newton's 3rd Law of equal and opposite actions. If the object pushed back with the full 77.3N in this case it would accelerate backward (F=ma), since there would be a net force on the object (77.3N - 26N = 51.3N) This obviously doesn't happen!
If you wanted the laser to refract less as it exits the prism, you should increase the wavelength of the light.
<h3>What is
refraction?</h3>
Refraction can be defined as a phenomenon which describes a change (bend) in the path taken by light when it's at surfaces between different transparent materials.
According to the model of light wave, the refraction of light is inversely proportional to its wave. Thus, you should increase the wavelength of light, if you want the laser to refract less as it exits the prism.
Read more on refraction here: brainly.com/question/15838784
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Conduction occurs when heat is transferred to an object through direct contact with particles.
<span>When the green arrow and solid red light is illuminated, </span>means you turn in the direction of the arrow.
Answer:
5m/s/s
Explanation:
10N bc you subtract 10N from 20N and you get 10
a=f/m
F=10N
m=2kg
10/2=5