Calculate the mechanical advantage of a machine that has an input force of 15 N and an output of 50 N

Ithink it is c ,i hope i you

What are you trying to ask?

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.