When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F, = n = 780 N. (For e, enter the smaller of the two possible values between 0° and 90°.) -Achilles Tibia tendon R 15.0°! 18.0 cm 25.0 cm a R =
When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F, = n = 780 N. (For e, enter the smaller of the two possible values between 0° and 90°.) -Achilles Tibia tendon R 15.0°! 18.0 cm 25.0 cm a R =
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Transcribed Image Text:When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force
g'
n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R
is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F
= n = 780 N. (For 0, enter the smaller of the two possible values between 0° and 90°.)
-Achilles
tendon
Tibia
15.0°
18.0 cm
25.0 cm
b
T =
R =
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