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The larger wheels on a wheelchair are 0.62 m in diameter. If these wheels take 0.5 seconds to rotate one full revolution, what is the tangential velocity of the wheelchair?

During the Great Depression, the federal government began to deport …

What New Deal agency put young, single men to work planting trees, building parks and fighting soil erosion?

A person (75 kg) walks straight ahead at a uniform speed of 2 steps (one gait cycle) per second. The above image shows the hip joint angle over the course of the gait cycle. Draw 4 separate free body diagrams on your scratch paper of the forces acting on the person as a whole (neglecting air resistance) from a sagittal view at: A) 30% of the gait cycle. (Only the right leg is in contact with the ground, i.e., single-stance. Note that hip angle is close to zero, so you can assume the person is standing fully upright). B) the same time in the gait cycle, but while carrying a cube-shaped box (mass 20 kg) that is 20 cm long and touches his abdomen. The horizontal distance between the center of his lumbar-sacral (low-back) disc to the front of his abdomen is 20 cm. The center of the disc represents the axis of rotation for trunk flexion/extension. C) the same time in the gait cycle, but while holding a different cube-shaped box (mass 25 kg) that is 15 cm long and also touches his abdomen. D) the same time in the gait cycle, but while holding yet a different cube-shaped box (mass 5 kg) which is 40 cm long, also touching his abdomen. You will upload these free body diagrams at the end once you have submitted your exam. Please make sure they are clearly labeled. (Note: you do not need to write anything in the text box below. This is just here in case you need to write any contextual information down to help us clarify your hand-drawn answer).

You are selecting a material for use in an orthopedic implant. You anticipate that the peak longitudinal loading on the implant would be 50 kN.  The implant is cylindrical with a length of 10 cm and a cross-sectional area of 4 cm2.  The material is made of titanium with a reported value of Young’s elastic modulus = 100 GPa (1 GPa = 109 Pa). (12 points)   Determine: a) The peak stress in longitudinal direction b) The strain in the material when the peak stress is applied. c) The change in length of the specimen when the peak load is applied. Please clearly label your numeric answers for parts a, b, and c in the text box below.

A mobility app measures the horizontal position, s, of a gyroscope in a smartphone as s = (0.5t3 + 4t) meters, where t is in seconds. Determine its horizontal velocity and acceleration when t = 3 s.

Force is a vector.

You have now finished the exam. Once you submit, you will no longer be able to access the exam. Please double-check your answers before submitting. Once you have hit submit, you have up to 10 minutes to upload a scanned version of your handwritten work in Canvas. The link to upload this is located directly under the exam link in the Midterm 2 Module on Canvas.  

For each of the following four knee positions (A, B, C, and D), there are two weight vectors (vector 1, indicating the weight of the leg, and vector 2, indicating the weight of an external weight attached to the ankle). State the angle of the each vector’s moment arm relative to the thigh segment (i.e., the upper portion of the leg that is proximal to the knee joint), such that perpendicular to the thigh would be 90

At complete extension, the elbow joint angle is about 3.14 radians.