What is applied load, applied force, and added load? friction

[SagarPatil]

So we are doing a lab in class where you have to calculate coefficient of friction.

This picture shows exactly what we are doing except the wooden block is flat

There weight on the string.

http://facstaff.gpc.edu/~apepper/website pics/friction2.jpg

So

what does added load (there is no units beside it)
What does applied force (assuming in Newtons, they are static friction)
What does applied load mean? (The units are in grams)

Here is some other info

Weight of wooden block is 186 G

 

[Simon Bridge]

Use the context of the instructions and your past experience of doing these labs to figure it out.
What would be best described as the load" on the cart? Do you ever add to it?
Do you apply a force to the cart at some stage?

Do you understand what the experiment is supposed to find and how the method let's you find it?
i.e. don't just follow instructions - understand them.

 

[SagarPatil]

My friend explained it. Thanks for helping.

 

[Simon Bridge]

Great... what was the explanation?
This is so other people may be helped by this thread.