Thanks for the diagram! That's what I had down, and I tried to use sine law but I can only get to sin35 = (r - 0.625) / r
I hate having people spell things out for me but I am just not getting this :(
Homework Statement
An applied force of 10.0N acts horizontally on a 0.50kg mass on a floor with the coefficient of friction being 0.40. If the object had an initial speed of 2.00 m/s, determine its speed at 15.0m.
Homework Equations
General Energy Conservation Formula
Ek(i) + Ep (i) +...
I did draw the picture; there's a big triangle of which the three sides are the vertical, the string, and an imaginary horizontal line, and a small one of which the three sides are h, the imaginary horizontal, and a hypotenuse roughly where the pendulum bob would swing. I've been staring at it...
Could you please specify what the triangle would look like and which trig functions to use? I know that h is the vertical distance between the start position and the bottom of the arc and that I should use trig on a constructed triangle but I'm a little brain dead as of now and totally stonewalled.
Homework Statement
A 2.0kg bob of a pendulum is held at an angle of 55 degrees from the vertical. When released it reaches a maximum speed of 3.5m/s. What is the length of the pendulum arm?
Homework Equations
Ek = 1/2mv^2
Ep = mgh
The Attempt at a Solution
1/2 * 2 * 3.5 ^ 2 =...