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 Part A If F = 0 and F = 12 N, what does the magnitude of F2 have to be for there to be rotational equilibrium? Answer numerically in newtons to two significant figures. F, F2, and F3. Note that the dimensions of the angles: bent rod are in centimeters in the figure, although the answers are requested in SI units (kilograms, meters, seconds). • View Available Hint(s) ? F2 = Submit Figure 1 of 1 > Part B If the L-shaped rod has a moment of inertia I = 9 kg m?, F = 12 N, F, = 27 N, and again F = 0, how long a time t would it take for the object to move through 45° ( 7/4 radians)? F 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. 3 ст • View Available Hint(s) 30° Pivot 8 cm ? t=

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 Part A If F = 0 and F = 12 N, what does the magnitude of F2 have to be for there to be rotational equilibrium? Answer numerically in newtons to two significant figures. F, F2, and F3. Note that the dimensions of the angles: bent rod are in centimeters in the figure, although the answers are requested in SI units (kilograms, meters, seconds). • View Available Hint(s) ? F2 = Submit Figure 1 of 1 > Part B If the L-shaped rod has a moment of inertia I = 9 kg m?, F = 12 N, F, = 27 N, and again F = 0, how long a time t would it take for the object to move through 45° ( 7/4 radians)? F 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. 3 ст • View Available Hint(s) 30° Pivot 8 cm ? t=

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 74P: A stepladder of negligible weight is constructed as shown in Figure P10.73, with AC = BC = ℓ. A...

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