Answer:
Part a)
![T = 676.9 N](https://tex.z-dn.net/?f=T%20%3D%20676.9%20N)
Part b)
![T = 676.9 N](https://tex.z-dn.net/?f=T%20%3D%20676.9%20N)
Part c)
![T = 725.2 N](https://tex.z-dn.net/?f=T%20%3D%20725.2%20N)
Part d)
![T = 628.6 N](https://tex.z-dn.net/?f=T%20%3D%20628.6%20N)
Explanation:
Part a)
Since the gymnast is holding the rope and remains stationary
So total force is balanced on it
so we will have
T = mg
![T = (69)(9.81)](https://tex.z-dn.net/?f=T%20%3D%20%2869%29%289.81%29)
![T = 676.9 N](https://tex.z-dn.net/?f=T%20%3D%20676.9%20N)
Part b)
Now gymnast start climbing the rope at uniform speed
so here we have
![a = 0](https://tex.z-dn.net/?f=a%20%3D%200)
so again we will have same force equation
![T = mg](https://tex.z-dn.net/?f=T%20%3D%20mg)
![T = 676.9 N](https://tex.z-dn.net/?f=T%20%3D%20676.9%20N)
Part c)
Now gymnast start climbing up the rope at uniform acceleration
so now we will have
![T - mg = ma](https://tex.z-dn.net/?f=T%20-%20mg%20%3D%20ma)
![T = mg + ma](https://tex.z-dn.net/?f=T%20%3D%20mg%20%2B%20ma)
![T = 69(9.81 + 0.700)](https://tex.z-dn.net/?f=T%20%3D%2069%289.81%20%2B%200.700%29)
![T = 725.2 N](https://tex.z-dn.net/?f=T%20%3D%20725.2%20N)
Part d)
Now gymnast start sliding downwards with same uniform acceleration
so now we will have
![mg - T = ma](https://tex.z-dn.net/?f=mg%20-%20T%20%3D%20ma)
now we have
![mg - ma = T](https://tex.z-dn.net/?f=mg%20-%20ma%20%3D%20T)
![T = 69(9.81 - 0.7)](https://tex.z-dn.net/?f=T%20%3D%2069%289.81%20-%200.7%29)
![T = 628.6 N](https://tex.z-dn.net/?f=T%20%3D%20628.6%20N)
An air-mass thunderstorm, also called an "ordinary", "single cell", or "garden variety" thunderstorm, is athunderstorm that is generally weak and usually not severe. ... The energy needed for these storms to form comes in the form of insolation, or solar radiation.