The Physics
Hypertextbook
Opus in profectus

Simple Machines

search icon

Problems

practice

  1. Write something else.
  2. A bucket grain elevator is powered by a 150 kW electric motor. Determine its efficiency if it can lift grain to a height of 60 m at a rate of 900 m3/h. Assume the elevator is lifting wheat with a density of 770 kg/m3.
  3. Write something different.
  4. Write something completely different.

numerical

  1. problem