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. . K- ]8 M; x+ \1 J9 W0 `+ }Note: CS=80 9 u" a u3 l5 i. W# R L1 Z( ^! ~# @, X/ u+ DRPM 1/8=2 I, ~, l4 }- Q! G9 v' m/ U5 j, K! R
RPM 3/4=) j, C# F) j% x% P Z* U