# Physics

posted by .

To strengthen his arm and chest muscles, an 83.0 kg athlete 2.00 m tall is doing a series of push-ups. His center of mass is 1.15 m from the bottom of his feet, and the centers of his palms are 30.0 cm from the top of his head. Find the force that the floor exerts on each of his feet and on each hand, assuming that both feet exert the same force and both palms do likewise.

• Physics -

Draw the figure.

83g*1.15=2*palm(2-.3)

That gives you each palm force. Now, 2*Palm+ 2*feet= 83g
solve for the force on each foot.

• Physics -

2.7

## Similar Questions

1. ### physics/math

Joe is a former basketball player who is now a work-out junkie, and especially loves to do push-ups. He was a good athlete, but not so good at science in school, especally not good in Physics. He wants you, yes you, to calculate how …
2. ### Physics

An athlete running on curved track with 15 m radius and with speed of 6.7 m/s. If the athlete doesn't tilt to avoid falling down then calculate the torque on the athlete. Assume that the height of the athlete is 1.7 m and center of …
3. ### Physics

to strengthen his arm and chest muscles, an 82-kg athlete who is 2.0 m tall is doing push ups. his center of mass is 1.15 m from the bottom of his feet, and the centers of his palms are 30.0cm from the top of his head. find the force …
4. ### physical

to strengthen his arm and chest muscles, an 82-kg athlete who is 2.0 m tall is doing push ups. his center of mass is 1.15 m from the bottom of his feet, and the centers of his palms are 30.0cm from the top of his head. find the force …
5. ### Science help ASAP

1. In which way does the circulatory system rely on the skeletal system?
6. ### science 3 questions

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on?
7. ### Help ASAP, plz?

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on?
8. ### Check my answers :(

A rock climber grasps onto a ledge in the rock wall. How do the bones and muscles in his arm interact to allow him to hold on?
9. ### Physics

A person whose weight is W = 658 N is doing push-ups. From his feet to his center of gravity he is 0.840m and from the center of gravity to his hands is 0.410m. Find the normal force exerted by the floor on (a) each hand and (b) each …
10. ### math

Ali is planning to keep fit through practicing push-ups for 21 days. on the first day, he can only do 14 push-ups in a minute. He plans to do x more push-ups in a minute on the next day. How many push-ups can he do in a minute on 11th …

More Similar Questions