Recent content by Rob123456789

F = (5100 – m) * 1.5 = 7650 – 1.5 * m so here is were I messed up ?

Why is this wrong ?

Don't really understand what you mean by expressing it in terms of h and L. This is the part I am stuck on.

Homework Statement A truck with a heavy load has a total mass of 5100 kg. It is climbing a 15∘ incline at a steady 15 m/s when, unfortunately, the poorly secured load falls off! Immediately after losing the load, the truck begins to accelerate at 1.5 m/s2. What was the mass of the load? Ignore...

Still gives me : The correct answer does not depend on: μκ.

or v = √(2gh - 2µk*gL(h/L))?

v = √(2gh - 2µk*gLcos(h/L)) ?

What do I do with it ?

This is what I get : final KE = initial PE - work done ½mv² = mgh - µk*mgLcos(arcsin(h/L)) → multiply by 2/m v² = 2gh - 2µk*mgLcos(arcsin(h/L)) → take square root v = √(2gh - 2µk*gLcos(arcsin(h/L))

<< Mentor Note -- poster has been reminded to fill out the Attempt at the Solution part of the Template in future HH threads >> 1. Homework Statement An object of mass m is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and...

The (0,45) and (7.8,44) calculated from trig

I keep getting √(52.8)^2+(44)^2 = 69 , but it's telling me I am wrong ? I added both of the vectors's components...

Can you guys show me how to do it with trig? I feel like I'm just stuck.

Yes, I am trying to do it with trig, but it seems to give me a wrong answer?

Homework Statement You go to an amusement park with your friend Betty, who wants to ride the 90-m-diameter Ferris wheel. She starts the ride at the lowest point of a wheel that, as you face it, rotates counterclockwise. What is the magnitude of her displacement vector when the wheel has...