If the L-shaped rod has a moment of inertia I = 9 kg m², F₁ = 12 N, F₂ = 27 N, and again F3 = 0, how long a time t would it take for the object to move through 45° (π/4 radians)? 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. Express the time in seconds to two significant figures.

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Chapter1: Units, Trigonometry. And Vectors
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12.1.2

Part B
If the L-shaped rod has a moment of inertia
I = 9 kg m², F₁ = 12 N, F₂ = 27 N, and
again F3 = 0, how long a time t would it take for
the object to move through 45° (π/4 radians)?
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.
Express the time in seconds to two significant
figures.
Transcribed Image Text:Part B If the L-shaped rod has a moment of inertia I = 9 kg m², F₁ = 12 N, F₂ = 27 N, and again F3 = 0, how long a time t would it take for the object to move through 45° (π/4 radians)? 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. Express the time in seconds to two significant figures.
A rod is bent into an L shape and attached at one
point to a pivot. The rod sits on a frictionless table
F₁
3 cm
Pivot
8 cm
BMX
30°
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: F₁, F2, and F3. 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).
Transcribed Image Text:A rod is bent into an L shape and attached at one point to a pivot. The rod sits on a frictionless table F₁ 3 cm Pivot 8 cm BMX 30° 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: F₁, F2, and F3. 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).
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