Post a New Question

physics

posted by .

You exert a force of 455N in pulling 15.0m of rope using a pulley system to lift a 935N object 5.0m. What is the efficiency of the pulley system?

Please help, I appreciate it a lot.

  • physics -

    Work exerted = Force x Distance = 6825 J
    Potential Energy increase: 935x5 = 4675 J

    Efficiency = 4675/6825 = ?

  • physics -

    A person uses a force of 600 N to lift a box from the ground to the top of the ramp shown. Another worker uses a force of 300 N to push the same box up the complete length of the ramp. What is the approximate percent efficiency of the ramp?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question