An effort of 250nN raises a loaf of 1000N through 5m in a pulley system. If the effort moves 30m what is work done in raising the load, the work done by the effort ,the efficiency

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

What do you think car designers do if the damage caused by a crash test is too severe?