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; =

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 76PQ: Jamal and Dayo are lifting a large chest, weighing 207 lb, by using the two rope handles attached to...
icon
Related questions
Question
Please answer all the parts of the question
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 =
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Electric field
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations…
Physics for Scientists and Engineers: Foundations…
Physics
ISBN:
9781133939146
Author:
Katz, Debora M.
Publisher:
Cengage Learning