Homework Statement
A screw pump is turned with a force of 125N. The handle traces a circle with a DIAMETER of 30cm, and is turned 45 times. The pump lifts 130 litres of water 2m high. (1 litre of water = 1kg aka 10N)
What is the work output?
What is the work input?
What is the efficiency of...
Homework Statement
Rather than lifting a 225kg motorcycle 60cm on a truck, Samantha uses a 4m plank as an incline and only requires 345N to push up the ramp
Homework Equations
The Attempt at a Solution
To find work output, i did .6M X 2250N giving me 1350 J
To find work...