A rod is bent into an L shape and attached at one point to a pivot. (Figure 1) The rod sits on a frictionless?

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A rod is bent into an L shape and attached at one point to a pivot. (Figure 1) The rod sits on a frictionless table and the diagram is a view from above. This means that gravity can be ignored for this problem. There are three forces that are applied to the rod at different points and angles: F⃗ 1, F⃗ 2, and F⃗ 3. Note that the dimensions of the bent rod are in centimeters in the figure, although the answers are requested in SI units (kilograms, meters, seconds).http://session.masteringphysics.com/problemAsset/1...If F3=0 and F1=12N, what does the magnitude of F⃗ 2 have to be for there to be rotational equilibrium?I found out F2 and its correct just need help in solving the other parts F2 = 4.5 N Part BIf the L-shaped rod has a moment of inertia I=9kgm2, F1=12N, F2=27N, and again F3=0, how long a time t would it take for the object to move through 45∘ ( π/4 radians)?t=Assume that as the object starts to move, each force moves with the object so as to retain its initial angle relative to the object. Part CNow consider the situation in which F1=12N and F2=0, but now a force with nonzero magnitude F3 is acting on the rod. What does F3 have to be to obtain equilibrium?Give a numerical answer, without trigonometric functions, in newtons, to two significant figures.F3 = Express the time in seconds to two significant figures.

Hermina Ferry · Accepted Answer

B) τ = 12N3cm - 27N8cm = -180 N·cm = -1.8 N·mBut also τ = Iα, soα = -1.8N·m / 9kg·m² = -0.2 rad/s²Θ = ½αt²π/4 rads = ½ 0.2rad/s² t² → t = 2.8 sC) 12N 3cm = F3 sin30 * 8cmF3 = 9.0 N

Jakob Littel

A rod is bent into an L shape and attached at one point to a pivot. (Figure 1) The rod sits on a frictionless?

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