A 200kg piston free falls 2.00m onto a block of ice. How much energy is transferred to the ice from the falling piston? (to the nearest WHOLE J). Use 10 m/s2 for g, the acceleration of gravity.

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

Comment on the effect of lubrication of the punch surfaces on the limiting drawing ratio in deep drawing.

A200-mm wide strip 25 mm thick is fed through a rolling mill w/two powered rolls each of radius = 250 mm. the work thickness is to be reduced to 22 mm in one pass at a roll speed of 60 rev/min. the average flow stress of the work material, as it passes through the rolls is 175 mpa. the friction coefficient between rolls and work material is 0.20. 1, determine a)-if friction is sufficient for rolling. b)- if friction is sufficient: c)- calculate roll force i calculate roll torque. d)- calculate roll power.