Answer:
It is given that the weight of the person is 102 N
We have the force that shall be needed to being the man out in minimum amount of time shall correspond to the maximum tension that can be developed
Thus using Newton's second law we obtain the acceleration that the man shall attain
![\sum F_{ext}=m\overrightarrow{a}\\\\T-W=ma\\\\\therefore a=\frac{T_{max}-W}{\frac{W}{g}}\\\\a_{max}=\frac{569-102}{\frac{102}{9.81}}=44.9m/s^{2}](https://tex.z-dn.net/?f=%5Csum%20F_%7Bext%7D%3Dm%5Coverrightarrow%7Ba%7D%5C%5C%5C%5CT-W%3Dma%5C%5C%5C%5C%5Ctherefore%20a%3D%5Cfrac%7BT_%7Bmax%7D-W%7D%7B%5Cfrac%7BW%7D%7Bg%7D%7D%5C%5C%5C%5Ca_%7Bmax%7D%3D%5Cfrac%7B569-102%7D%7B%5Cfrac%7B102%7D%7B9.81%7D%7D%3D44.9m%2Fs%5E%7B2%7D)
Now using second equation of kinematics to obtain time 't' we get
![t=\sqrt{\frac{2s}{g}}\\\\t=\sqrt{\frac{2\times 35.1}{44.9}}=1.25secs](https://tex.z-dn.net/?f=t%3D%5Csqrt%7B%5Cfrac%7B2s%7D%7Bg%7D%7D%5C%5C%5C%5Ct%3D%5Csqrt%7B%5Cfrac%7B2%5Ctimes%2035.1%7D%7B44.9%7D%7D%3D1.25secs)
Answer:
Uniform Circular Motion What is the direction of the force that acts on the clothes in the spin cycle of a washing machine?
Explanation:
The string acts as the centripetal force that pulls the bucket and water into the center and keeps them from following their paths of inertia, giving the illusion that centrifugal force is pulling the water away from the center. ... If you spin the bucket too slowly, the water will fall out and you will get wet.
The Coriolis effect influences wind direction around the world in this way: in the Northern Hemisphere it curves winds to the right; in the Southern Hemisphere it curves them left. The exception is with low pressure systems. ... This happens simply because the Earth is a sphere and would be true if the Earth didn't rotate.