In this problem, you will practice applying this formula to several situations involving angular acceleration. in all of these situations, two objects of masses m1 and m2 are attached to a seesaw. the seesaw is made of a bar that has length l and is pivoted so that it is free to rotate in the vertical plane without friction. you are to find the angular acceleration of the seesaw when it is set in motion from the horizontal position. in all cases, assume that m1> m2, and that counterclockwise is considered the positive rotational direction. a) assume that the mass of the swing bar, as shown in the figure, is negligible. find the magnitude of the angular acceleration a(alpha) of the seesaw. express in variables of m1, m2, l and g. b) now consider a similar situation, except that now the swing bar itself has mass mbar . (part c figure)
find the magnitude of the angular acceleration a (alpha) of the seesaw. give answer as variables as before.
Answers: 3
Physics, 22.06.2019 18:20
Object a has a length of 3 cm, a width of 2 cm, and a height of 4 cm. object b is dropped into a graduated cylinder. it displaces 19 ml of water. the volume of object a is: a: greater than the volume of object b b: less than the volume of object b c: equal to the volume of object b
Answers: 2
Physics, 22.06.2019 18:30
Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
Answers: 1
In this problem, you will practice applying this formula to several situations involving angular acc...
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