What is the Force Exerted by a Pebble on a Block in an Ideal Atwood's Machine?

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To determine the force exerted by a pebble on a block in an ideal Atwood's machine, consider the mass of the pebble and the gravitational force acting on it. The pebble exerts a force equal to its weight, which is calculated as the product of its mass (m) and the acceleration due to gravity (g). Since the pebble is resting on the block, this force is the only one acting downward on the block. The key takeaway is that the force exerted by the pebble on the block is simply m * g. Understanding this relationship is crucial for solving problems related to forces in Atwood's machines.
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Homework Statement


A pebble of mass m rests on the block of mass of m2 the ideal Atwood's machine in the figure below. Find the force exerted by the pebble on the block of mass m2. (Use the following variables as necessary: m for m, m_1 for m1, m_2 for m2, and g for gravity.)


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The Attempt at a Solution


i dont' know where to begin- -help!
 
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since you are just dealing with the pebble and the block which it rests on it .. it should be obvious that the pebble can only exert one force on that block since it has a certain mass m .. can you guess what should it be?
 

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