Answer to Question #198104 in Physics for becky

Question

The mass of matts head is 5 kg and its centre of mass (A) is located LHead = 30 mm anterior to the axis of rotation (atlanto-occipital joint, B) acting at an angle of 90°. The neck extensors act LNeck = 52 mm posterior to the axis of rotation, at an angle of 𝜃

θ

 = 128°. matt is currently holding his head still. How much force do the neck extensor muscles need to produce to keep the head from nodding (i.e. keep his head still). Assume gravity is 9.8 m.s-2?

Answer 1

Dear becky, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order