A jack system will increase the potential energy of a heavy load by 1000 J with a work input of 2000 J. The efficiency of the jack system is
A) 10%.
B) 20%.
C) 50%.
D) 80%.
Answer: C
A jack system will increase the potential energy of a heavy load by 1000 J with a work input of 2000 J. The efficiency of the jack system is
A) 10%.
B) 20%.
C) 50%.
D) 80%.
Answer: C