The output work of a machine compared to the input work is the efficiency of the machine.

True

Explanation:

Efficiency of machine is determined by dividing the work output by the work input and normally expressed as a percentage hence the above statement is true. Normally, the efficiency of a machine is not always 100% due to energy losses within machine parts. The energy losses are mainly attributed to friction hence methods of reducing friction within mechanical parts such as oiling and greasing are recommended to achieve higher mechanical efficiency.

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.