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## Homework Statement

A ball of weight 5 N is suspended by two strings as shown [linked below].

(a) Draw and label all forces that act on the ball.

**(b)Determine the magnitude of each of the forces indicated in part (a).**

Suppose that the ball swings as a pendulum perpendicular to the plane of the page [or, in this case, computer screen. As if it is swinging towards, and away from you], achieving a maximum speed of .6 m/s during it's motion.

**(c) Determine the magnitude and direction of the net force on the ball as it swings through the lowest point in it's motion.**

I think I understand (a) well enough. I need a little help on (b) (a bit of a poke in the right direction, I suppose), and I am just really lost on (c). Thanks.

Below is my best recreation of the diagram I have been provided with, created in Google Docs.

https://docs.google.com/drawings/edit?id=1uH2B3r1d-COC1TYU17Itg1kLf4C7v1OHZtn6QS0huzg&hl=en"

## Homework Equations

[tex]\sum[/tex]F

_{net}= ma

## The Attempt at a Solution

(a) So, free body diagram is easy enough. Could you please check it. It is to the right in the GoogleDoc provided at the top.

(b) Okay, a bit more complicated. So, I have the degree of the string, the length of the string, and the weight of the ball. I also know that gravity is constant, at 9.81 m/s^2. Therefore, m

_{b}g = (5N)(9.8m/s^2) [or would you have to convert 5N to kg somehow?). Then, I know that T1 + T2 = mg. So... stuck... Now I figure that somehow the degrees and lengths come into play, but I really don't know how...

(c) I really do not understand this problem, or the concept behind it. I don't think we have actually been taught how to do this... Still, I am sure that it is quite obvious and understandable once I know it... SO, at the lowest point, the acceleration is... 0? in the y-direction?

SO if you could please, please help me with these I will be forever grateful, haha. Thank you in advance

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