Bearing problem
A ball bearing sits between two metal grooves, with the top groove having an angle of 120◦ and the bottom groove having an angle of 90◦ , as in the […]
Author: mathnecessity
Certified Math teachers in US
How to Solve Problems and make sense of them
Certified Math teachers in US
A ball bearing sits between two metal grooves, with the top groove having an angle of 120◦ and the bottom groove having an angle of 90◦ , as in the […]