When pushing off of a pool wall, a swimmer exerts a force parallel to the length of her femur, compressing it 3 x 10 m. The bone is equivalent to a uniform cylinder 36.0 cm long and 1.75 cm in radius. Young's modulus for bone is 16 x 10⁹ N/m². (a) Calculate the force exerted (in N). 1710 x Consider the basic definition for Young's modulus. N (b) If her mass is 65.5 kg and water resistance is negligible, what is her acceleration (in m/s2)? Assume her weight is precisely supported by the water. m/s² (e) How fact (in m/c) i going starting from rect?

When pushing off of a pool wall, a swimmer exerts a force parallel to the length of her femur, compressing it 3 x 10 m. The bone is equivalent to a uniform cylinder 36.0 cm long and 1.75 cm in radius. Young's modulus for bone is 16 x 10⁹ N/m². (a) Calculate the force exerted (in N). 1710 x Consider the basic definition for Young's modulus. N (b) If her mass is 65.5 kg and water resistance is negligible, what is her acceleration (in m/s2)? Assume her weight is precisely supported by the water. m/s² (e) How fact (in m/c) i going starting from rect?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Mechanical Properties of Solids

There are three types of matter- solid, liquid and gas. Out of them, solids have a rigid shaped and size. The intermolecular forces of attractions in solids are greatest. Mechanical properties are the physical properties of a material which it shows, when it is provided with certain amount of force or load. These properties are to be kept in mind for various purposes. When a force is applied to an object, the object may or may not get deformed depending upon its elastic property. But every time the object develops a restoring force against the force applied. This is commonly known as stress. If the object changes its dimensions due to the force applied it develops strain ( which is the ratio of change in dimension to the original dimension).

Question

When pushing off of a pool wall, a swimmer exerts a force parallel to the length of her femur, compressing it 3 × 10−5 m. The bone is equivalent to a uniform cylinder 36.0 cm long and 1.75 cm in
radius. Young's modulus for bone is 16 × 10⁹ N/m².
(a) Calculate the force exerted (in N).
1710
X
Consider the basic definition for Young's modulus. N
(b) If her mass is 65.5 kg and water resistance is negligible, what is her acceleration (in m/s²)? Assume her weight is precisely supported by the water.
m/s²
(c) How fast (in m/s) is she going once she exerts this force through a distance of 20.5 cm, starting from rest?
m/s

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