Recent content by physics517

Ok so i initially tried this problem using calculus but I became confused. So then i tried the following 1/2 mv^2 / t = fd / t = Fv = mav so then i solved for a which gave me a=v/ 2t so where did i go wrong?

Homework Statement A car has an engine which delivers a constant power. It accelerates from rest at time t = 0, and at t = t0 its acceleration is a0. What is its acceleration at t = 2t0? Ignore energy loss due to friction. the answer is a0 /sqrt(2) Homework Equations work = Fd...

I think my problem was that i assumed L to be the spring's length when it was loaded. But what you stated makes sense now and it leads to the right answer. excellent help. you gave me info but just enough to make me think and understand it thank you

hmm the problem doesn't specify that location. Cant we just assume it to be at location 0

Homework Statement A mass m is resting at equilibrium suspended from a vertical spring of natural length L and spring constant K inside a box. The box begins accelerating upward with acceleration a. How much closer does the equilibrium position of the mass move to the bottom of the box...

Lol I shouldve drew a diagram. so up top its F+mg=mv^2/r and the F (tension) cancels out since we're trying to find minimum speed. so v=sqrt(gr) and if we go back to my original work equation it should be 1/2 m vf^2 = mgh + 1/2 m vtop ^2 then you find the Vf and then plug that into...

Homework Statement Abullet of mass m strikes a pendulum of mass M suspended from a pivot by a string of length L with a horizontal velocity v0. The collision is perfectly INelastic and the bullet sticks to the bob. Find the minimum velocity v0 such that the bob (with the bullet inside)...