Yes. However, I think I hit a wrong number on my calculator before. I still get around 142.6, though.
Sorry I let my friend use my laptop and he must have typed in his into Jiskha. It's still Tim. Sorry for the confusion.
I'm also confused as to why the angle θ is 0.5981. I thought I had to use arctan(1.13/141) which gives me a 38.9 degree angle.
When I try balancing the forces, I end up with T = mg, which gives me an answer which is over twice the correct answer.
A trapdoor on a stage has a mass of 20.8 kg and a width of 1.58 m (hinge side to handle side). The door can be treated as having uniform thickness and density. A small handle on the door is 1.41 m away from the hinge side. A rope is tied to the handle and used to raise the doo...
I was able to figure this one out with a related question. Thank you!
A thin uniform rod (length = 1.3 m, mass = 3.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is (1/3)mL2. The rod is released when it is 50° below the horizontal. What is the angular accelerat...
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