Wednesday
December 17, 2014

Homework Help: physics

Posted by Blessig iliya on Wednesday, October 12, 2011 at 4:05pm.

A lift is used to carry boxes to the top floor of a hotel 20m high.A total weight of 100kg of boxes was caried up in 20second.If the useful output of the engine driving the lift mechanism is 1.2 kilowatt.calculate the efficiency of the engine of the lift mechanism.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - there are 30 boxes to be moved out of a house bob can carry 3 boxes at a ...
physics - Ten boxes, each 16.0 cm high and weighing 250 N, initially are all ...
math - Find the total weight of the boxes of pecans in a shipment of 3 lb boxes ...
Math - The Pack-U-Up Moving Company uses several different size boxes,but the ...
math 6 grade - The Pack-U-Up Moving Company uses several different size boxes,...
Physics - 7. A stock person at the local grocery store has the job of 1) picking...
Math (for Damon) - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 ...
Mathematics - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes...
math - Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and ...
physics - 1.when a person diet's is their goal to lose weight?explain. 2.a man ...

Search
Members