Recent content by wchvball13

apparently I suck at physics because I can't even understand how you can find Alpha from eq. 2. Once I figure out that I can find the rest but for right now all I have is I1=.0408 and I2=.0176...and that's if I ignore the masses since they're equal...

I understand both of your replies, but I still don't understand how I can solve it if I don't have M or alpha I1 = (M* 0.35^2)/3 and I2 = ( M*0.23^2)/3

Homework Statement Two thin rectangular sheets (0.23 m 0.35 m) are identical. In the first sheet the axis of rotation lies along the 0.23 m side, and in the second it lies along the 0.35 m side. The same torque is applied to each sheet. The first sheet, starting from rest, reaches its final...

nevermind...I got it..I didn't realize I would take 92 x 4 to use as the weight

Where am I going wrong?

Homework Statement A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 92 kg. A person pushes on the outer edge of one pane with a force of F = 79 N that is directed perpendicular to the pane. Determine the magnitude of the door's...

ok I'm still completely lost...could you maybe baby step me through this?

I don't understand... W1(x1)=W2(x2) = Xcg W1+W2 Is this the wrong equation?

Homework Statement A uniform plank of length 4.6 m and weight 210 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 448 N walk on the overhanging part of the plank before it just begins to tip? Homework...

i'm retarded... THANKS!

Homework Statement A stroboscope is a light that flashes on and off at a constant rate. It can be used to illuminate a rotating object, and if the flashing rate is adjusted properly, the object can be made to appear stationary. (a) What is the shortest time between flashes of light...

so this is the equation I want? m1vf1 + m2vf2 = m1vo1 + 0 and then just cancel out the velocities? I'm so confused

Homework Statement A projectile (mass = 0.24 kg) is fired at and embeds itself in a target (mass = 3.00 kg). The target (with the projectile in it) flies off after being struck. What percentage of the projectile's incident kinetic energy does the target (with the projectile in it) carry off...