I have attempted each problem, but am getting lost on just what to do to solve. If i could be pointed in the right direction on how i should go about each problem that would be nice. Attached are my attempts at problems 1-3.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

SEE ATTACHMENT

3. The attempt at a solution

See attatchments for attempts at first 3

attempt at problem 4

M = .150kg D = .65 m

F(x) = 15000 + 10000x -25000X^2

A) work done = ∫F(x)dx = ∫15000 + 10000x -25000X^2 dx

= 15000x + 5000x^2 - ((25000x^3)/3) bounded from 0 to 65 = -9572 Joules

I only need help with part A for problem 4. I feel like i had to have done something wrong or i approuched the problem wrong because a negative answer doesn't seem to make sense.

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# Homework Help: HW help requested (Tension, Circular motion, Work and Energy Theorum)

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