- #1
annanause
- 20
- 1
Homework Statement
When a mother lifts he child with her foot (as shown in figure) what force should the upper muscle exert to lift her child at a constant speed?
Homework Equations
W = F x D
f = mg
I think these might be the right equations to use, correct me if I'm wrong.
The Attempt at a Solution
I'm not sure if I need to add up the forces and distances shown in the figure? If I did W would be:
W = (0.2m + 0.38m)(39N + 98N)
W = 0.58 x 137 = 79.46Nm
Do I need to convert kg into N?
f = mg
f = 137N x 9.80 m/s
f = 1342.6
Is this at all in the right tracks?