Posted by **PhysicsCrazy<3** on Friday, March 2, 2012 at 5:54pm.

A boy exerts a force of 210 N on a lever to raise a 1.25 103 N rock a distance of 12 cm. If the efficiency of the lever is 88.7%, how far did the boy move his end of the lever?

Thanks for all your help :)

<3,

PhysicsCrazy<3

## Answer This Question

## Related Questions

- physics - Ayesha exerts a force of 186 N on a lever to raise a 2.70 × 103-N ...
- Physics - A force of 60 N is exerted on one end of a 1.0-m-long lever. The other...
- physics - A man lifts various loads with the same lever. The distance of the ...
- physics - A man lifts various loads with the same lever. The distance of the ...
- physics - 3. A man lifts various loads with the same lever. The distance of the ...
- science - A man lifts various loads with the same lever. The distance of the ...
- physics - a lever is 5 m long. The distance from the fulcrum to the weight to be...
- Physics - the input and output of hydraulic jack are respectively 1 cm and 4 cm ...
- physics - A machine with an efficiency of 100% is said to be efficient. a) If a ...
- Integrated Physics and Science - A crowbar is used as a lever. The effort force ...

More Related Questions