Homework Statement
A symmetrical door of mass 27.5 kg is 5.44 m high and 2.46 wide. The hinges are placed at the very top and very bottom of the door. Find the magnitude of the horizontal force exerted by the lower hinge.
Homework Equations
Fd=Fd
sum tau clockwise = sum tau...
Thanks guys, I feel really dumb making these silly mistakes. Live and learn, eh?
While waiting for a reply, I managed to figure out the right answers for all four parts.
Thanks again, guys. :)
Homework Statement
A wheel (mass 9.6 kg, radius 0.855 m) in the shape of a disk is rotating at 81.9 rpm when a tool is pressed against the edge of the wheel, slowing it down at a constant rate to 48 rpm in 3.81 seconds. Find:
a) the magnitude of the torque exerted by the tool on the wheel
b)...
I understand that the i, j, and k components are the x, y, and z directions, respectively. My frustration is that I believe I'm following the correct formula, but I still get the wrong answer. Where is my reasoning flawed?
I have tried the following:
AxB = (3.94)(5.09)sin(42.79) = 13.62...
Homework Statement
Vector A = 3.5i + 1.8j and vector B = 1.7i + 4.8j . Find the components of A x B:
Homework Equations
AxB = AB sin(theta)
The Attempt at a Solution
Since vector A=3.5i+1.8j and B=1.7i+4.8j, I translated that into vectors. So, A is 3.94 @ 27.77*, and B is 5.09 @...