Recent content by Haptic9504

I went right to looking at r since this question immediately follows a chapter on expressing motion in the cylindrical coordinate system (r,theta,z). I feel as though that would complicate the problem. Cylindrical coordinates simplify the expressions a little.

Homework Statement The particle has a mass of 0.5kg and is confined to move along the smooth horizontal slot due to the rotation of the arm OA. Determine the force of the rod on the particle and the normal force of the slot on the particle when θ = 30∘. The arm has an angular acceleration of θ¨...

This can be closed, I just integrated incorrectly.

Homework Statement The thin plastic rod shown in the figure has length L = 18.0 cm and a nonuniform linear charge density λ = cx, where c = 14.5 pC/m2. With V = 0 at infinity, find the electric potential at point P1 on the axis, at distance d = 5.10 cm from one end. Figure is attached...

Sure enough, that was it. Leave it to my graphic calculator to lead me askew. Thanks!

I have gone over it a few times, keep getting the same answers. :(

Homework Statement A 25.0 g copper ring at 0°C has an inner diameter of D = 2.71585 cm. A hollow aluminum sphere at 88.0°C has a diameter of d = 2.72019 cm. The sphere is placed on top of the ring (see the figure), and the two are allowed to come to thermal equilibrium, with no heat lost to the...

Okie dokie. Well thank you for solving my confusion. :wink:

If I'm correct, the normal force is equal to the weight which equals Mass x Gravity. Therefore wouldn't μ(mg) be correct? The sin portion is in there due to an angle in the problem statement. And a classmate just told me that the force of friction is only affected by the coefficient of friction...

Homework Statement "A 1250 kg slipper hippo slides down a mud covered hill inclined at an angle of 18 degrees to the horizontal. A) If the coefficient of friction is 0.0900, what force of friction impedes the hippo's motion down the hill? B) If the hill were steeper, how would this affect the...