Please help, very confused

  • Thread starter Liamsbab
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  • #1
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Homework Statement



The thigh muscle that bends the knee is attached to the bone 2cm away from the fulcrum and generates a force of 400N. The distance between the weight and the fulcrum is 40cm. Calculate the upward force at the point where the muscle in the thigh contracts.



Homework Equations


No idea, i am really confused.



The Attempt at a Solution


None
 

Answers and Replies

  • #2
berkeman
Mentor
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What can you tell us about torques? Can you sketch a diagram showing the problem statement, and label the forces, where they act, and how they make torques?
 

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