To solve this problem we will apply the concepts related to the balance of forces. We will decompose the forces in the vertical and horizontal sense, and at the same time, we will perform summation of torques to eliminate some variables and obtain a system of equations that allow us to obtain the angle.
The forces in the vertical direction would be,
The forces in the horizontal direction would be,
The sum of Torques at equilibrium,
The maximum friction force would be equivalent to the coefficient of friction by the person, but at the same time to the expression previously found, therefore
Replacing,
Therefore the minimum angle that the person can reach is 46.9°
Solving for vf gives you PiVi/Pf. Now plug in 101kPa*10L/43kPa = 23.48L. Using significant figures i would round to 23.5L
Let t be the time they both meet. When they meet they both have covered the distance between them.
Arthur with 3 m/s would have covered 3t m
Betty with 2 m/s would have covered 2t m
3t + 2t = 100
5t = 100
t = 100/5
t = 20 seconds.
Spot who is helplessly runing back and forth at 5 m/s would have done this for 20 seconds.
This distance covered by spot = 5m/s * 20s = 100m
Muscles are attached to bones; they help us walk and run and smile. All the bones in our body make up our skeleton from the top of our skull to the tips of the phalanges at the end of our toes. Muscles stretch across our bones and are attached with tendons.