How much work will be necessary for the band members to safely move the new 120 kilogram amplifier to the garage where they practice? The amplifier needs to be moved a total distance of 35 meters.
For the activities listed below, list one way in which work is done and two simple machines which are used in each task:
a. making a meal
b. traveling to school
c. moving to a new apartment
d. playing in a rock band
2007-01-25 14:14:18 · 1 answers · asked by maconheira 4 in Education & Reference ➔ Homework Help
1.) To determine the amount of work, you use the formula: W = F * d
The main problem here is that the amount of force depends greatly on how they choose to move it. Do they lift the amp and carry it? Do they lift it a little and put it on a wheeled cart? Are they using pulleys? Are they sliding it along the floor? Each one will require a different amount of force.
2.) I'll do one as an example:
When making a peanut butter sandwich, you use a knife (lever) to do the work of spreading and apply the peanut butter, and you use a screw when opening closing the top of the peanut butter jar (the threaded cap).
2007-01-26 07:50:37 · answer #1 · answered by ³√carthagebrujah 6 · 0⤊ 0⤋