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8. A 20 newton object is pulled along a surface at a constant speed of 3.0 meters per second using a force of 4.5 newtons. The kinetic coefficient of friction is closest to
(1) 0.23
(2) 0.30
(3) 0.67
(4) 4.4

Proof: Draw sketch / Show calculations.​

8 A 20 Newton Object Is Pulled Along A Surface At A Constant Speed Of 30 Meters Per Second Using A Force Of 45 Newtons The Kinetic Coefficient Of Friction Is Cl class=

Sagot :

Lanuel

To calculate the kinetic coefficient of friction is closest to: 1. 0.23.

Given the following data:

  • Horizontal force = 4.5 Newton
  • Normal force = 20 Newton
  • Speed = 3.0 m/s

To calculate the kinetic coefficient of friction:

Mathematically, the kinetic force is given by this formula;

[tex]F_k = uF_n[/tex]

Where;

  • [tex]F_k[/tex] represents the kinetic force.
  • [tex]F_n[/tex] is the normal force.
  • μ represents the kinetic coefficient of friction.

Making μ the subject of formula, we have:

[tex]u=\frac{F_k}{F_n}[/tex]

Substituting the given parameters into the formula, we have;

[tex]u=\frac{4.5}{20}[/tex]

u = 0.225 ≈ 0.23

Read more on kinetic coefficient of friction here: https://brainly.com/question/13940648

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