- #1
2ndyrengneer
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Homework Statement
A lead block is suspended from your hand by a string. The reaction to the force of gravity on the block is the force exerted by:
(a) the string on the block (b) the block on the string (c) the string on the hand
(d) the hand on the string (e) the block on Earth
Homework Equations
Newtons Third Law
The Attempt at a Solution
Ok,
When i saw this question in the exam I thought it was essentially a no brainer; "The reaction to the force of gravity on the block is the force..."- I thought Newtons third law. I could see kids answering b, c or maybe d (definitely not e) but I selected a. The block experiences Fg and the string Tension is the reaction to that force.
I got 89% on this midterm and would have gotten 94% if the answer to this question would have been a. It was e. Yes e. Does anyone here (preferably someone with a Phd in physics) have an explanation as to why the answer is e. I am rather frustrated as you can probably infer from my post. Earth isn't even mentioned in the question. E was in my oppinion an almost joke option because they couldn't think of a 5th option for letter e (all the rest of the questions had answers a-e). Why is it e!?