A particle has the potential energy shown in the figure. See link below. What is the x-component of the force on the particle at x =5, 15, 25, and 35 cm?
All answers are in N
http://img111.imageshack.us/img111/4988/figure2vn4.jpg
i know i should be using -dU/dx
but i keep getting the...
Help
Now I have another problem
A 10 g particle is moving to the left at 29 m/s. How much net work must be done on the particle to cause it to move to the right at 47 m/s?
W=mg\Deltar
I got 1.7. I don't think I am doing this right.
A 1.1 kg book is lying on a 0.80-m-high table. You pick it up and place it on a bookshelf 2.17 m above the floor.
How much work does gravity do on the book?
How much work does your hand do on the book?
W=mgh
(1.1 kg)(9.8 m/s^2)(0.8m)=8.6
The answers that I am getting are wrong...
Homework Statement
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 37 m diameter loop-the-loop.
What is the car's speed at the top?
Homework Equations
n-mg=0
I don't know what equation to use
The Attempt at a Solution
I...
A 1.0 kg block is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of the 2.0 kg block is 0.40 (static friction).
What is the tension...