When you bend your knee, the quadriceps muscle is stretched. This increases the tension in the quadriceps tendon attached to your kneecap (patella), which, in turn, increases the tension in the patella tenson that attaches your kneecap to your lower leg bone (tibia). Simultaneously, the end of your upper leg bone (femur) pushes outward on the patella. See the diagram. In the quadriceps and patellar tendon let tension = T = 60N.
A) What are the x- and y- components of the force exerted by the femur on the patella?
B) What is the magnitude of the force, and its direction?
Homework Answers
∑F(horiz) = 0
Fx = 60 cos 42 = 44.58 N
∑F(vert) = 0,
Fy = 60 - 60 sin 42 = 60 - 40.148 = 19.85 N
F = √ Fh² + Fv² = √ 44.58² + 19.85² = 48.8 N
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When you bend your knee, the quadriceps muscle is stretched.
This increases the tension in the...
When you bend your knee, thequadriceps muscle is stretched. This increases the tension in the...
When you bend your knee, the
quadriceps muscle is stretched. This increases the tension in the
quadriceps tendon attached to your kneecap (patella), which, in
turn, increases the tension in the patella tendon that attaches
your kneecap to your lower leg bone (tibia). Simultaneously, the
end of your upper leg bone (femur) pushes outward on the patella.
The figure shows how these parts of a knee joint are
arranged.(Figure
1)What size force does the femur exerts on the kneecap
if...
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angles shown in Figure 5.43. Find the magnitude and direction of
the force exerted by the kneecap on the upper leg bone (the femur).
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When you bend your knee, the
quadriceps muscle is stretched. This increases the tension in the
quadriceps tendon attached to your kneecap (patella), which, in
turn, increases the tension in the patella tendon that attaches
your kneecap to your lower leg bone (tibia). Simultaneously, the
end of your upper leg bone (femur) pushes outward on the patella.
The figure shows how these parts of a knee joint are
arranged.(Figure
1)What size force does the femur exerts on the kneecap
if...
The upper leg muscle (quadriceps) exerts a force of 1220 N,
which is carried by a tendon over the kneecap (the patella) at the
angles shown in Figure 5.43. Find the magnitude and direction of
the force exerted by the kneecap on the upper leg bone (the femur).
N ° (counter-clockwise from an axis directed to the left)
The diagram of the leg shows the femur (I) and tibia (2). The quadriceps muscle (3) applies a force to the lower leg via a tendon (4) that is embedded with the kneecap (5). If the force applied by the muscle to the tendon is Fm 500 N. what is the force of the femur on the kneecap, if the leg is in equilibrium? A simplified model of the leg is shown next to the diagram. The leg bones are...
The upper leg muscle
(quadriceps) exerts a force of FQ = 1380 N, which is carried by a
tendon over the kneecap (the patella) at the angles shown in the
figure.
(5%) Problem 20: The upper leg muscle (quadriceps) exerts a force of FQ-1380 N, which is carried by a tendon over the kneecap (the patella) at the angles shown in the figure 55° 750 Otheexpertta.com > 50% Part (a) Find the magnitude of the force, in newtons, exerted by...
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caw and label these parts in the knee-jerk (postural al reflex. Next to eat help you, here is a colors so that the AND the specific name (such as quadriceps femoris) hould include in your diagram of this reflex. Bes drawing can be read clearly. Any structures not designat Jerk (postural) reflex. Next to each part, write the general (such as effect ps femoris) for each part. To help you, here is a list of all terms that you s...
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