Recent content by Lamnia

So... when I took F_r net = T = m*g + (m*v^2)/r, my calcs proved spot on. Thanks, again, LowlyPion :)

Homework Statement A 140g ball on a 60 cm long string is swung in a vertical circle about a point 200 cm above the floor. The tension in the string when the ball is at the very bottom of the circle is 6.9 N. At the very bottom of the circle, a very sharp knife is suddenly inserted to cut the...

According to the diagram accompanying the problem the angle is 60 degrees to the right of the y-axis. So... maybe I should be using 30 degrees as the angle to calculate the i and j components of the displacement along the yellow brick road and subtract that from the displacement of the treasure...

I've just edited to include that necessary information. Sorry for the initial exclusion!

The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 530 paces, then due east for 130 paces. Dig." But when you arrive, you find an angry dragon just north of the tree. To avoid the dragon, you set off along the...

Thanks, so much... I'd even calculated 120 degrees and then just looked at the 30 degrees below the horizontal to determine the components :) I can finally move on to the next problem!

The minute hand on a watch is 2.0 cm in length. What is the displacement vector of the tip of the minute hand from 8:00am to 8:20am. Express the vector in x and y components. --------------------------------------------------------------------------------------------------- I'm beginning to be...