1.1.2 Exam. Semester Exam How could you best increase the mechanical efficiency of a screwdriver for
using it to open a can of paint?
A. Make it out of material that is very strong so that more of the input
work is changed into useful output work.
B. Make the handle smooth and slippery to reduce friction with the
user's gloves.
O C. Make it out of material that bends easily so that less of the input
work is changed into useful output work.
O D. Make the handle thin to reduce the user's ability to grip it and apply
an input force