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FRICTION INVESTIGATION

Summarize your findings in a short report of 150 words. Include your hypothesis, observations, data, calculations, and conclusion. The answers to the questions below should be included in your conclusion.

Why didn't the box slide off the table before you put enough coins in the bag?
What was the coefficient for the smooth surface? For the rough surface?
What was the difference between the two coefficients? What caused this difference?
What factors caused a margin for human error in this investigation?
Would the coefficient vary if you tied the string to a similar object of different masses, but on the same surface? Explain.
What did you learn from this investigation? Be thoughtful in your answer.

Respuesta :

mickymike92

Based on the nature of friction:

  • the box did not slide off the table before you put enough coins in the bag due to friction.
  • The coefficient of the friction of the rough surface is greater than that of the smooth surface
  • The difference is due to the nature of the surfaces.
  • Human errors could occur if the coins are not added carefully
  • the coefficient of friction is a constant for a given surface and independent of the mass of the object.

What is friction?

Friction is the opposition to the relative motion of an object over another at their surfaces of contact.

The coefficient of friction is a ratio of the frictional force and the normal reaction.

  • Coefficient of friction = frictional force/normal reaction

The coefficient of friction of rough surfaces is greater than that of smooth surfaces.

In the given experiment:

  • the box did not slide off the table before you put enough coins in the bag because of friction between the box and the table
  • The coefficient of the friction of the rough surface is greater than the coefficient of friction of the smooth surface
  • The difference between the two values of coefficient of friction is due to the nature of the surfaces.
  • Human errors in the experiment could occur when the coins are not added carefully
  • The coefficient of friction of each surface is constant and independent of the mass

In conclusion, the experiment demonstrates that the coefficient of friction  is a constant for given surfaces and does not depend on the mass of the object.

Learn more about coefficient of friction at: https://brainly.com/question/10907027

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