A 105cm Rod is suspended on a wall with a 5N force pulling upwards, 110 degrees away from the horizontal axis and 5cm from a 50kgm hanging object. Find the location of the C.G. away from the wall. Neglect the Mass of the rod and consider it a rigid body. Assume SSLC. 02: Considering a CCW movement is Positive, what is the total value of the Negative Moments at the point with the 50kgm object? Please answer in four decimal places, in Nm.

Torque Problem The diagram below shows the lower leg being held in a stationary. The torque acting to turn the leg in a clockwise direction is being generated by the weight of the leg and the weight of a barbel attached to the ankle. Using the information provided calculate the magnitude of the quadriceps force. LOWER LEG IN ANGULAR EQUILIBRIUM 15° Quadriceps muscle force 0.05m 0.14 m 50° 0.30m 90 Newtons 120 Newtons Show your calculations step by step here. Includes diagrams and short comments to explain your approach to solving the problem.

You are sitting in a chair and you are ready to kick a soccer ball from a sitting position using only your quadriceps muscles to rotate your knee. Be sure you will not pivot your hips, as you are sitting in the chair; we want to simplify this problem to include only rotating your lower leg at the knee joint and keeping your thigh firmly fixed to the seat. For our purposes, your quadriceps muscles can be treated as a single string that exerts a tension on the knee at a right angle from a lever arm of 2.00 cm. The knee is connected to a plausible 50.0 cm lower leg as measured from the pivot point of the knee to the contact point where we will kick the ball.Before we kick it, we would like to balance the ball on our contact point (at our ankle, say) 50.0 cm away from the pivot point of the knee by extending the lower leg straight out (upper leg aligned with the lower leg). The soccer ball has a mass of 400 grams. We will neglect all mass of all parts of the leg here for brevity.a) Draw an…

A schematic diagram of the knee joint is shown in Fig, where Cdenotes the effective center of rotation of the knee and P is the point of insertion of the quadriceps tendon to the patella. The distance from C to P is 10 cm. The quadriceps, responsible for extension of the knee, are known to produce maximum isometric tetanic tension at an effective optimal length of 30 cm. This occurs when the knee flexion angle, θ, is 45◦. Obtaining muscle performance data from the appropriate figure in this chapter, determine the range of knee flexion angles for which the quadriceps produce an isometric tetanic tension at least 80% of maximal. Hint: be careful to use radians (rather than degrees) in this question when appropriate.