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abannavong

Physics help with torque! The crank arm of a bicycle is 16.5 cm long. If a 52.0 kg woman puts all weight on one pedal, how much torque is developed a. when the crank is horizontal b. when the crank is vertical

  • one year ago
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  1. sarahi_smiles
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    I just know A ok

    • one year ago
  2. abannavong
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    can u help me with a.

    • one year ago
  3. sarahi_smiles
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    But anyway A is...84.2Nm

    • one year ago
  4. abannavong
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    how do you find tht

    • one year ago
  5. sarahi_smiles
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    give me one second... F=mg t(torch)=rF sin emtyset sign emptyset sign =90 degrees t(torch)= (0.165)(52.0)(9.81)(SIN165) t(torch)= 84.2Nm

    • one year ago
  6. sarahi_smiles
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    there you go...sorry I couldn't help you with b...

    • one year ago
  7. abannavong
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    its alright

    • one year ago
  8. abannavong
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    i have another question though .. if a force of 4 N is needed to open a 1m wide door when applied at the edge opposite the hinges what force must be applied to open the door if you push against the door 10 cm from the hinged side

    • one year ago
  9. sarahi_smiles
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    I'm not sure...sorry...

    • one year ago
  10. abannavong
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    oh ok thanks

    • one year ago
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