Real world testing bench - trying to check my calculations

AI Thread Summary
The discussion centers on a homemade 'repeating pendulum hammer' designed for product testing, with specific dimensions and weight provided. The creator estimates the instantaneous force exerted by the hammer upon impact to be between 360 to 420 pounds. A participant highlights the importance of calculating the deceleration of the hammer and suggests considering the target's elasticity for more accurate results. The inquiry seeks validation of the force range and clarification on the test's purpose. Overall, the conversation emphasizes the complexities involved in accurately measuring impact forces in such experimental setups.
leahcim
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I know this seems like a homework question but the last time I was in a physics class was <ahem> 1982.

For product testing reasons, I have fabricated a (rough, very rough--no laughing at the fabrication/welding) 'repeating pendulum hammer'. Please see "test rig diagram.jpg"

Distance from A to B is 13.5"
Weight of (C) Hammer (pendulum) is 10 pounds

C is raised 90 degrees and then dropped to strike B (30/minute - fyi)

I am assuming away all frictions, incorrect/incomplete angles and time issues.

I believe/calculated the instantaneous force (in pounds/force) at B, exerted by the hammer (C) to be in the range of 360 to 420.

This Rube Goldberg was conceived on a bar napkin talking with a ME. Do the forces fall in that range?

TIA,
leahcim
 

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How did you get this force range?

The important thing here is the deceleration of the 'hammer'. This is in general tough to calculate...you might get close if you can find the elasticity of the target (assuming the 'hammer' is a hard metal).
 
What exactly are you trying to achieve with your test? I do this stuff for a living, so I am always interested.
 
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