Explain why a wrench with a very long handle is useful for loosening stuck bolts. Explain why it is much more difficult to hold a sledgehammer horizontally with your hand on the end of the handle than it is to hold it with your hand close to the head.

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.