Recent content by jesse james

Nice thanks for your reply... so I was using the wrong formula for the force of the spring once i found K...so I found K the same way as before then instead of using the formula for Pe of the spring I used hookes formula for the force of a spring which was force=Kx that gave me the answer of...

Homework Statement A sling shot can launch a 50gram rock at a speed of 24m/s if it is stretched .4meters before release. Find the average force applied to the rock Homework Equations Spring force = 1/2*k*x^2 1/2kx^2 = 1/2mv^2 The Attempt at a Solution tried to solve for K...

i really don't know how to figure out the angles...i seen from the sample problem that he used 70° in his first equations and didnt know how he got it

i tried with 36 and was still coming up with wrong asnswer anychance someone could work out the equations so I could understand i bit better

Homework Statement 2 equally charged spheres both weighing 0.8g are hanging from 25cm of thread... As a result of the equal positive charge placed on each ball they spread apart forming an angle of 36 degrees between the threads. What is the charge on each ball? **almost identical to the...

Physics Help Computing Force Homework Statement Two insulated balls with a mass of 0.8g each are suspended on 25 cm threads from the same point on the ceiling. Each ball has a equal positive charge. The angle formed between the two threads is 36 degrees. What is the charge on each ball...