Posted by **anonymous** on Sunday, February 20, 2011 at 10:48pm.

A crane lifts a concrete hopper of mass 370 kg from the ground to the top of a 38 m building that is under construction. The hopper moves with a constant speed during the lift. The power rating of the crane motor is 8.2 kiloWatts.

How long does it take for the crane to lift the hopper to the top of the building?

## Answer this Question

## Related Questions

- physics - A crane lifts a concrete hopper of mass 370 kg from the ground to the ...
- Physics Help - A crane is used to lift air conditioning units to the top of a 5-...
- Physics Help Urgent Please!!! - A crane is used to lift air conditioning units ...
- Physics - **I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS** An object ...
- Physics - A salami sandwich is dropped from the top of a 37 m tall construction ...
- math - A lottery draws n numbers, values 1-N , from a hopper that replaces the ...
- probability/stat - A lottery draws n numbers, values 1-N , from a hopper that ...
- probability/stat - A lottery draws n numbers, values 1-N , from a hopper that ...
- Phisycs - Lake Point Tower in Chicago is the tallest apartment building in the ...
- physics - A crane lifts 1 tonne of concrete through a height of 25 m. How much ...