Question
A workshop grindstone of radius 7.50 cm turns at 6500 rev/min. (a) Determine the centripetal acceleration magnitude at the rim in m/s² and as a multiple of g. (b) Determine the linear speed at the rim.
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Evidence boundary
The two-part grindstone exercise is OpenStax College Physics 2e, Chapter 6, Problem 14. The solution treats 7.50 cm as the rim radius and 6500 rev/min as a constant rotation rate, with g = 9.80 m/s² for comparison. It calculates ideal kinematic acceleration and speed, not material strength, forces, or safe operating limits.