Answered: F2 F- 2.750 m 45° F3 2.750 m

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter5: Temperature And Heat

Section: Chapter Questions

Problem 19P: . On a winter day, the air temperature is — 15°C, and the humidity is 0,001 kg/m3. (a) What is the...

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A square metal plate with mass M= 5.8 kg and side length 2.75 m is pivoted about an axis through point O at its center and perpendicular to the plate. Three forces of magnitude F1= 40 N, F2= 48 Nand F3= 36 N act on the plate as shown: a. What is the net torque on the square plate due to these forces? *Magnitude: *Direction (into the paper or out of the paper): b. What is the angular acceleration of the disk? The moment of inertia for a plate of length a and width b rotating about its center is Icom=(1/12)(M)(a²+b²). *Magnitude: *Direction (into the paper or out of the paper): 3. If the plate is initially at rest, what is the angular velocity of the particle at 3 s? *Magnitude: *Direction (into the paper or out of the paper):

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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