Distance is multiplicd in a machinc. MA =
cffort arm length
load arm length
MA =
input distance
output distance
measured
actual MA =
force
output
measured input force
For each problem below, determine which equation you need to use, and solve the
problem. Be sure to show your work.
1. A baseball player swings her bat and hits a baseball. The player's hands move a distance
of 1.0 m while the end of the bat moves 1.5 m. What is the mechanical advantage of
the bat?

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.