A machine is to punch a 25-mm diameter hole from a 19 mm thick steel plate having an ultimate shear strength of 400 MPa.
Posted: Mon May 02, 2022 3:16 pm
A machine is to punch a 25-mm diameter hole from a 19 mm thick
steel plate having an ultimate shear strength of 400 MPa. A
flywheel is to be designed with a mean diameter of 1 meter, a
maximum operating speed of 200 rpm, and a coefficient of
fluctuation of 0.1. The flywheel’s hub and arms’ weight may be
taken to be 10% of the rim’s weight. The width of the rim is to be
five times its thickness. Determine the flywheel weight required in
kg. A. 432
B. 642
C. 468
D. 569
steel plate having an ultimate shear strength of 400 MPa. A
flywheel is to be designed with a mean diameter of 1 meter, a
maximum operating speed of 200 rpm, and a coefficient of
fluctuation of 0.1. The flywheel’s hub and arms’ weight may be
taken to be 10% of the rim’s weight. The width of the rim is to be
five times its thickness. Determine the flywheel weight required in
kg. A. 432
B. 642
C. 468
D. 569