A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill. % f$ V2 V: _5 J9 T; O1 w9 FNote: CS=80 3 n7 Y5 Z# p+ [2 N; { N# u/ w9 X7 w, R% i6 D: B
RPM 1/8= + B P" l$ d6 O9 ?- @$ F0 IRPM 3/4=, k, J& G" B9 D9 ], I: }, {