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pratu043

  • 3 years ago

The 4 kg head of a sledgehammer is moving at 6 m/s when it strikes a spike driving it into a log. The duration of the impact is 2 ms. Find the time average of the impact force.

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  1. UnkleRhaukus
    • 3 years ago
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    impulse is the change in momentum

  2. pratu043
    • 3 years ago
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    Yes, but where does impulse come here?

  3. rajathsbhat
    • 3 years ago
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    It's basic newton's second law. \[F=\frac{m(v-u)}{t}\] You know m, v (=0), u and t.

  4. pratu043
    • 3 years ago
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    What do you mean by time average of impact force?

  5. pratu043
    • 3 years ago
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    @rajathsbhat you have given the way to find the force, but that is not what they are asking here.

  6. rajathsbhat
    • 3 years ago
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    hmm i just noticed that.....i'm not too sure of what means though...

  7. rajathsbhat
    • 3 years ago
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    *what it means

  8. pratu043
    • 3 years ago
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    Please help, this sum has been frustrating me for hours .... don't even know what it means ...

  9. Shadowys
    • 3 years ago
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    perhaps it's simply F/t?

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