Science help? Physics? Chemistry?
I’M HAVING A HARD TIME WITH THE FOLLOWING!! PLEASE HELP!
Can someone explain how the scientific defenition of work is different from the everyday meaning?
Can someone give me an example of a situation in which a force is applied but no work is done?
Which of the following situations is work being done?
A)A person shovels snow off a sidewalk.
B)A worker lifits bricks, one at a time, from the ground to the back of a truck.
C)A roofer’s assistant carries a bundle of shingles across a construction site.
Can someone describe to me the circumstances for which the output work would equal the input work in a machine?
How does lubricating a machine effect the output force exerted by the machine?
I’m having a hard time calculating the mechanical advantage of a hammer if the input force is 125 N and the output force is 2,000 N.
-THANKS IN ADVANCE!!!!
