Knee torque Jan does leg lifts with a 10-kg weight attached to her foot, so the resulting force is mg = 98 N directed vertically downward (see figure). If the distance from her knee to the weight is 0.4 m and her lower leg makes an angle of 0 to the vertical, find the magnitude of the torque about her knee as her leg is lifted (as a function of 0). What are the minimum and maximum magnitudes of the torque? Does the direction of the torque change as her leg is lifted? 0.4 m m = 10 kg mg = 98 N
Knee torque Jan does leg lifts with a 10-kg weight attached to her foot, so the resulting force is mg = 98 N directed vertically downward (see figure). If the distance from her knee to the weight is 0.4 m and her lower leg makes an angle of 0 to the vertical, find the magnitude of the torque about her knee as her leg is lifted (as a function of 0). What are the minimum and maximum magnitudes of the torque? Does the direction of the torque change as her leg is lifted? 0.4 m m = 10 kg mg = 98 N
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Transcribed Image Text:Knee torque Jan does leg lifts with a 10-kg weight attached to
her foot, so the resulting force is mg = 98 N directed vertically
downward (see figure). If the distance from her knee to the weight
is 0.4 m and her lower leg makes an angle of 0 to the vertical, find
the magnitude of the torque about her knee as her leg is lifted (as a
function of 0). What are the minimum and maximum magnitudes
of the torque? Does the direction of the torque change as her
leg is lifted?
0.4 m
m = 10 kg
mg = 98 N
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