Aball weighing 1 lb is attached to a string 2 feet long and is whirled in a vertical circle at a constant speed of 10 ft/sec.

a) determine the tension in the string when the ball is at the top of the circle;

b) at the bottom.

c) consider the ball at some point other than the top or bottom. what can you say about the tension in the string at this point

Explanation:

It is given that,

Mass of the ball, m = 1 lb

Length of the string, l = r = 2 ft

Speed of motion, v = 10 ft/s

(a) The net tension in the string when the ball is at the top of the circle is given by :

F = 18 N

(b) The net tension in the string when the ball is at the bottom of the circle is given by :

F = 82 N

(c) Let h is the height where the ball at certain time from the top. So,

Since,

Hence, this is the required solution.

i believe it is b. what was the cause of the big bang

hope this !

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