How Is Efficiency Most Often Expressed? Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output (“product”) produced per the amount C (“cost”) of resources consumed. What is the unit of efficiency? Efficiency has no
How Do You Calculate Work Input? Calculate the work input in a pulley by using the previous readings in the correct mathematical equation: Work (W) equals force (f) multiplied by distance (d), or W=fd. The work done by the pulley is the equation of weight (w) multiplied by height traveled (h). What do you mean
How Do You Calculate Useful Work Done? Work is done whenever a force moves something over a distance. You can calculate the energy transferred, or work done, by multiplying the force by the distance moved in the direction of the force. How do you calculate useful work efficiency? The work efficiency formula is efficiency =