Mini-Quiz: Effect of Friction in Ramps

1. When does the ideal force mechanical advantage apply?

   When the mechanical advantage equals 1Sorry, not correct. Try another button. When there is no frictionThat is correct. You know about ramps and friction. When friction equals the mechanical advantageGood try, but not right. Select another answer.

2. How does friction change with increase angle of inclination?

   Friction is reduced with an increased angleCorrect. You are improving! Friction is independent of the angleSorry, not correct. Try another button. Friction is increased with an increased angleOops! Wrong answer. Re-read the question and try again.

3. What happens when the inclined angle is zero?

   The mechanical advantage with friction becomes the idealGood try, but not right. Select another answer. It is no longer an inclined ramp and the mechanical advantage is meaninglessThat is correct. You know about ramps and friction. The object starts moving by itselfOops! Wrong answer. Re-read the question and try again.

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