Question: what is the difference between work power and mechanical efficiency of a machine?
Answer: THIS IS BECAUSE THE WORK OUTPUT IS NEVER GREATER THAN THE WORK INPUT. A MACHINE'S MECHANICAL ADVANTAGE TELLS YOU HOW MANY TIMES THE MACHINE MULTIPLIES FORCE. IN OTHER WORDS, IT COMPARES THE INPUT FORCE WITH THE OUTPUT FORCE. MECHANICAL EFFICIENCY IS A COMPARISON OF A MACHINE'S WORK OUTPUT WITH THE WORK INPUT.