Question

Molly used a ramp to load boxes into a truck. Her input work was 5,000 J and
the output work was 3,000 J. What was the mechanical efficiency of the
ramp?
ANSWER QUICK PLEASE

Answer 1

Answer:

60 %

Explanation:

We are given ;

• Work input as 5000 Joules
• Work output as 3000 Joules

We are required to calculate the efficiency of the machine;

What is efficiency?

• Efficiency is the ratio of work output to inputs expressed as a percentage.

• That is;

Efficiency = (work output ÷ work input) × 100

                = (3000 J ÷ 5000 J) × 100

                = 60 %

Thus, the efficiency of the machine is 60%.