The drawing shows a lower leg being exercised. It has a 49 N weight a

In summary, the conversation discusses a drawing of a lower leg being exercised with a weight attached to the foot at an angle θ with respect to the vertical. The task is to find the magnitude of the torque created by the weight when θ = 90.0, considering a rotational axis at the knee. The person also asks for clarification on labeling and concept understanding, but later figures it out.
  • #1
cmkc109
103
0

Homework Statement



The drawing shows a lower leg being exercised. It has a 49 N weight
attached to the foot and is extended at an angle θ with respect to the
vertical. Consider a rotational axis at the knee.
a. When o
θ = 90.0 , find the magnitude of the torque that the
weight creates

Homework Equations





The Attempt at a Solution



Shouldn't the angle be the force (weight) with respect to r? Here is r with respect to r perpendicular, or did I get the labels wrong? If it is the case, should we solve the angle by 90 - theta?

I get the answer but I don't get the concept. Can someone help me with the labelling?
Great appreciated if you can explain it on the diagram, thanks!
 

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  • #2
i 've figured out! don't think i can delete the post..
 

1. What is the purpose of the weight in the drawing?

The weight in the drawing is being used as a form of resistance to exercise the muscles in the lower leg.

2. How much weight is being used in the exercise?

The weight being used in the exercise is 49 N, which can also be expressed as approximately 11 pounds.

3. What muscles are being targeted in this exercise?

The muscles being targeted in this exercise are typically the calf muscles, including the gastrocnemius and soleus muscles.

4. Is this a common exercise for strengthening the lower leg?

Yes, this is a common exercise for strengthening the lower leg, as it specifically targets the muscles in that area.

5. Are there any safety precautions to consider when performing this exercise?

It is important to start with a weight that is appropriate for your fitness level and to use proper form to avoid injury. It is also recommended to consult with a professional before beginning any new exercise routine.

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