Recent content by Ghostscythe

Yes, your calculation for the reaction force on rear wheels was right. How did you get that? I think I understand how you found the rest, but that's not clear to me.

Yes, they're equally balanced on either side of the CoM.

Homework Statement In the figure below, the driver of a car on a horizontal road makes an emergency stop by applying the brakes so that all four wheels lock and skid along the road. The coefficient of kinetic friction between tires and road is 0.36. The separation between the front and rear...

Homework Statement In the figure below, a 0.360 kg ball is shot directly upward at initial speed 37.5 m/s. What is its angular momentum about P, 2.15 m horizontally from the launch point, when the ball is at the following heights? a) its maximum height b) halfway back to the ground...

I had a similar problem (just the numbers changed). I get the whole h = dsin(30) thing, but why does Fn = mgcos(30)?

Update - got this problem right, then did another frustrum (of a cone) and got that right as well. Thanks for the pointer, appreciate it! :D I love how this parallels the derivative formula in the easy/hard way...(1/3)*h*(a-b)^2 every time, give or take a Pi...lol.

Ahh, soo..S(x) = b + [(a-b)x]/hSo it would be the integral from 0..h of ( b + [(a-b)x]/h )^2 dx.. And the volume is: V = [PLAIN]http://www4a.wolframalpha.com/Calculate/MSP/MSP105419c6ggha31a9g60d000062bg6e58533dg93g?MSPStoreType=image/gif&s=16&w=117&h=36

Homework Statement Find the volume, using only the variables a, b, and h in your answer. A frustum of a pyramid with square base of side b, square top of side a, and height h: Homework Equations Area = length*width. Length of side S = ?? The Attempt at a Solution I...