Recent content by scrumjosh

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    Breaking a Karate Striking Board with Wrecking Ball

    because there was no way of testing it that way. we tried several systems using clamps etc but our apparatus was not stable. So the only way that i could hold it and hit it was by clamping the bottom half in the technology departments workbench and striking the top off. So I still have my...
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    Breaking a Karate Striking Board with Wrecking Ball

    thanks for your responce but i still have my initial problem. after finding the pressure required to break the joint in the board by holding the bottom and striking the top i have no way to relate this to how much pressure is required to break the joint if i strike it in the middle any ideas?
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    Breaking a Karate Striking Board with Wrecking Ball

    hey cheers for your responce but i was led to believe that to work out 'how hard the board needs to be hit' i would have to find the sheer breaking force. this would be determinned by hitting it and not by adding weights until it breaks. the boards are not actually wood as i stated but a very...
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    Breaking a Karate Striking Board with Wrecking Ball

    In my A level physics class i have decided to find the amount of force required to break a karate striking board and relate it to how much force is required to break a human rib and a jaw etc The striking board is basically a board that has been cut in half so there is a snapping line across...
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    Test of power on a swinging mass striking an object

    1. Hello, I need to devise myself a practical coursework and i have chosen to find out how several variables effect the power of a swinging mass striking an object. Variables: I will use a motor to swing an arm of 30cm with a 1kg mass attached to the end with a time period of 1 second. The...
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