In a workshop, Drilling operator is working on a Drilling machine. The drilling operator needs to perform 25 mm diameter through hole with cutting speed 35 m/min. If the operator wants to perform drilling operation smoothly, at what speed the spindle of the drilling machine needs to rotate?

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Q: I didn't understand how you fond the angle teta

A: For solution refer below images.

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A:

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A:

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Q: Describe the Parallel-Axis Theorem for an Area?

A:

Q: Redraw when the rack AB is at 89o angle. What are the other two angles belonging to the triangle…

A: When the rack AB is at 89o angle. Draw the diagram as given above.