A construction worker uses 1,000 J of work to screw two boards together. The screw does 855 J of work. Calculate the efficiency of the screw. PLZ HELP!!!

Question

asked Feb 2, 2020 28.6k views

1 Answer

Edd Turtle · Answer 1 · 2020-02-06T09:17:34+0000

Answer:

The efficiency of the screw is 85.5%

Step-by-step explanation:

to calculate efficiency you have to do

efficiency=energy output/ energy input × 100%

so e=855/1000 × 100%=85.5%