Asked by Nicole
A man doing push-ups pauses in the position shown in the figure . His mass = 68 kg.
Image: img145.imageshack.us/img145/7130/picture1n.png
a= 40 cm
b= 95 cm
c= 30 cm
Determine the normal force exerted by the floor on each hand.
Determine the normal force exerted by the floor on each foot.
Image: img145.imageshack.us/img145/7130/picture1n.png
a= 40 cm
b= 95 cm
c= 30 cm
Determine the normal force exerted by the floor on each hand.
Determine the normal force exerted by the floor on each foot.
Answers
Answered by
bobpursley
Let Fl be the force upward on the hands, Fr be the force on his toes.
Fr+Fl=weight
Now sum moments about any point, I will sum them about the feet. Clockwise moments are postive. -weight*b+Fl*(a+b)=0
you have two equations, two unknowns (Fl,Fr). solve. Now for each hand,divide Fl by 2, and for each foot, divide Fr by 2.
Fr+Fl=weight
Now sum moments about any point, I will sum them about the feet. Clockwise moments are postive. -weight*b+Fl*(a+b)=0
you have two equations, two unknowns (Fl,Fr). solve. Now for each hand,divide Fl by 2, and for each foot, divide Fr by 2.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.