- #1
mart7x
- 12
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Hypothetically, if I had a sphere and a block (of the same mass and material (hence the same coefficients of static friction for both interfaces) both stationary on a surface, they would require the same force to initiate motion?
Once moving, a coefficient of sliding friction is employed in the case of the block, and a coefficient of rolling resistance in the case of the sphere, hence the sphere requires a much lower force to maintain motion (assuming the coefficient for rolling resistance is lower)?
Are these questions true or false? I have had a few debates with lecturers and although this may be a very straightforward questions (very simple mechanics) I am curious to hear others opinions.
Thank you,
Martin
Once moving, a coefficient of sliding friction is employed in the case of the block, and a coefficient of rolling resistance in the case of the sphere, hence the sphere requires a much lower force to maintain motion (assuming the coefficient for rolling resistance is lower)?
Are these questions true or false? I have had a few debates with lecturers and although this may be a very straightforward questions (very simple mechanics) I am curious to hear others opinions.
Thank you,
Martin