Posted by **genesis** on Tuesday, May 1, 2012 at 9:54am.

A pulley system reduces the effort of lifting a big bucket of water from a shallow well. The 100-newton bucket is lifted to a height of 5 meters with an unknown input force. If 50 meters of rope is pulled to lift the bucket the desired height and the percent efficiency of the pulley system is 78%, what must the input force be?

## Answer This Question

## Related Questions

- physics - A 3 lb bucket containing 40 lb of water is hanging at the end of a 20 ...
- Physics C. Mechanics - A small paint bucket of mas 5.0 kg is attached to a ...
- Physics - Yocelyn is lifting a 10.0 kg bucket from a well. She wants the bucket ...
- Calc 2 - A 3-lb bucket containing 20- lb of water is hanging at the endof a 20-...
- 9th grade - Mr. Mistâ€™s ramp broke so he tried to lift the his 150 Newton box of ...
- Calculus - A bucket begins weighing 30 pounds, including the sand it holds. The ...
- Math - A bucket begins weighing 15 pounds, including the sand it holds. The ...
- Calculus - A bucket begins weighing 15 pounds, including the sand it holds. The ...
- Calculus - A 20 meter long steel cable has density 2 kg per meter. It is hanging...
- physics - A 5.4-kg bucket of water is raised from a well by a rope. If the ...

More Related Questions