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Problem 5: Consider the forces involved in doing push-ups. The woman's weight acts as a |force exerted downward on her center of gravity (marked CG in the figure). You may assume that the angle between her body and the floor is small enough so that the small angle approximation is valid throughout this motion. m = 50 kg CG w Freaction 0.90 m 1.50 m Part (a) Calculate the force, in newtons, the woman in the figure exerts to do a pushup at constant speed. F; =

Problem 5: Consider the forces involved in doing push-ups. The woman's weight acts as a |force exerted downward on her center of gravity (marked CG in the figure). You may assume that the angle between her body and the floor is small enough so that the small angle approximation is valid throughout this motion. m = 50 kg CG w Freaction 0.90 m 1.50 m Part (a) Calculate the force, in newtons, the woman in the figure exerts to do a pushup at constant speed. F; =

College Physics
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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Problem 5: Consider the forces involved in doing push-ups. The woman's weight acts as a force exerted downward on her center of gravity (marked CG in the figure). You may assume that the angle between her body and the floor is small enough so that the small angle approximation is valid throughout this motion. m = 50 kg CG w F 0.90 m reaction 1.50 m Part (a) Calculate the force, in newtons, the woman in the figure exerts to do a pushup at constant speed. F = sin() cos() tan() 7 8 9 HOME
Transcribed Image Text:Problem 5: Consider the forces involved in doing push-ups. The woman's weight acts as a force exerted downward on her center of gravity (marked CG in the figure). You may assume that the angle between her body and the floor is small enough so that the small angle approximation is valid throughout this motion. m = 50 kg CG w F 0.90 m reaction 1.50 m Part (a) Calculate the force, in newtons, the woman in the figure exerts to do a pushup at constant speed. F = sin() cos() tan() 7 8 9 HOME
Part (b) How much work, in joules, does she do if her center of mass rises 0.23 m? Part (c) What is her useful power output, in watts, if she does 27 push-ups in 1 min? Ignore any work done during the downward motion. P =
Transcribed Image Text:Part (b) How much work, in joules, does she do if her center of mass rises 0.23 m? Part (c) What is her useful power output, in watts, if she does 27 push-ups in 1 min? Ignore any work done during the downward motion. P =
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