If the fibers of a pennate muscle are oriented at a 43° angle to a central tendon, how much tension is produced in the tendon when the muscle fibers contract with 1600 N of force?
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If the fibers of a pennate muscle are oriented at a 43° angle to a central tendon, how
much tension is produced in the tendon when the muscle fibers contract with 1600 N of
force?
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- Assume Young's modulus of a femure bone of an effective diameter 2.5 cm is 1.5 x1010 N/m2. The bone breaks if a stress greater than 2 x10° N/m² is imposed on it. What is the maximum force that can be exerted on it?Biceps muscle. A relaxed biceps muscle requires a force of 25.0 N for an elongation of 3.0 cm; under maximum tension, the same muscle requires a force of 500 N for the same elongation. Find the Young modulus for the muscle tissue under each of these conditions if the muscle can be modeled as a uniform cylinder with an initial length of 0.200 m and a cross-sectionalIf the static friction coefficient assume 0.4, calculate the smallest (theta) angel that keep the plate with weight W at its rest.
- x. 7 A steel wire having cross-sectional rea 2 mm² is stretched by 10 N. Find the ateral strain produced I the wire. Given: Y for steel = 2 x 101 N/m², Poisson's ratioo = 0.29)A Particle o mass 0.8Kq is cettached to one end of a liyht clastic Striny of notural length. Ooom. The COtler end of te String is attauched toai fixxed Point A. The particle is released from rest at A cud Comes to rest to instantaneaUS rest 1.1m beldw A. Find the maduLus af elasticity of the String.The five-bolt connection must support an applied load of P-4700 lb. If the average shear stress in the bolts must be limited to 43 ksi, determine the minimum bolt diameter that may be used for this connection. Cocoo Answer: dmin in.
- Compressive Strength of Trabecular bone equal to .a 2.11x106 N/m² .b 2.2x106 N/m2 .C 2.02x106 N/m2 .d 2.12x106 N/m2Find the force exerted by the biceps muscle in holding a 1.00-L milk carton (weight 9.90 N) with the forearm parallel to the floor. Assume that the hand is 35.0 cm from the elbow and that the upper arm is 30.0 cm long. The elbow is bent at a right angle, and one tendon of the biceps is attached to the forearm at a position 5.00 cm from the elbow, while the other tendon is attached at 30.0 cm from the elbow. The weight of the forearm and the empty hand is 16.9 N, and the center of gravity of the forearm with hand is at a distance of 16.5 cm from the elbow.Triceps 14- 101 2.4 cm Muscles can only contract, so they occur in pairs. In the arm, the biceps muscle is a flexor-that is, it closes the limb. The triceps muscle is an extensor that opens the limb. This configuration is typical of skeletal muscles, bones, and joints in humans and other vertebrates. Most skeletal muscles exert much larger forces within the body than the limbs apply to the outside world. Imagine that a person is pushing down on a tabletop with their hand as shown in the figure. If the person applies a downward force of 70 N with their hand (thats about 16 lbs of force) what force does the triceps tendon exert on the lower arm? The unknown force is indicated by the red arrow in the figure. Ignore the weight of the arm in your calculation. O 5.6 N 70 N 280 N 875 N 30 cm 945 N
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