A student attaches a series of weights to a tendon and measures the total length of the tendon for each weight. He then uses the data he has gathered to construct the graph shown in (Figure 1), giving the weight as a function of the length of the tendon. What is the force constant for the tendon? (Express your answer in newtons per meter.) What weight should you hang from the tendon to make it stretch by 17 cm from its unstretched length? (Express your answer in newtons.)

A uniform rod has mass m and length L. One end of the rod is attached to a fixed point O by a hinge and an additional force F is applied to the other end of the rod in the direction shown, perpendicular to the rod. Given that the rod is in mechanical equilibrium, what is the magnitude of the applied force F, expressed as a numerical multiple of mg, where g is the magnitude of the acceleration due to gravity? Express your answer to 3 decimal points.

A person places his hand palm downward on a scale and pushes down on the scale until it reads (8.31x10^1) N. The triceps muscle is responsible for this arm extension force. Find the force (in N) exerted by the triceps muscle. The bottom of the triceps muscle is 2.50 cm to the left of the elbow joint, and the palm is pushing at approximately 35.0 cm to the right of the elbow joint. (please ignore the number 96 shown in the scale). Give your answer with three significant figures.

A spring of unstreched length 25 cm is pulled in a horizontal direction with 150 N force. Since we apply a force in a horizontal direction, the spring is stretched to 28 cm. Now we suspend the spring from a hook in a vertical direction and attached a 15 kg mass at the bottom. How long my spring will stretch?