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This is the answer to one of my practice problems, however I don't understand how the angular acceleration is simplified for A, B and C. How does rFsin90/(2M)(2L) equal 3F/ML and etc. for the other ones? And then after you simplify all the angular accelerations, how do you know which one is smallest to greatest? How do you tell that C is greater than B?

This is the answer to one of my practice problems, however I don't understand how the angular acceleration is simplified for A, B and C. How does rFsin90/(2M)(2L) equal 3F/ML and etc. for the other ones? And then after you simplify all the angular accelerations, how do you know which one is smallest to greatest? How do you tell that C is greater than B?

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This is the answer to one of my practice problems, however I don't understand how the angular acceleration is simplified for A, B and C. How does rFsin90/(2M)(2L) equal 3F/ML and etc. for the other ones? And then after you simplify all the angular accelerations, how do you know which one is smallest to greatest? How do you tell that C is greater than B? 

B: To the right are top views of three rods that vary in mass M and length L. The rods are fixed at the circular point at one end and a force is ap- plied to the other end. Note that the moment of inertia of a rod about its end is I = mr² where m is the mass and r is the length. 4F Rank the situations based on the magnitude of the angular acceleration of the rods. î = Id So But z=pF₁: The Largest A = C > B Explain your reasoning and show at least one example of your calculation. x= C: α = A: α = 3 (4F) sin 90 (2M)(2L) rf sin Ⓒ mp² a= 3 (F) Sin 90 ML = α = 3(4F) sin 30 3F (M) (4L) 2ML 2M A 3F ML 3F 7/4 I 2L 3F sine =r Fsin ← Angle between rod and force mr ML OM 4L Smallest 30`- z 2 } mp² 4F с OM L OF
Transcribed Image Text:B: To the right are top views of three rods that vary in mass M and length L. The rods are fixed at the circular point at one end and a force is ap- plied to the other end. Note that the moment of inertia of a rod about its end is I = mr² where m is the mass and r is the length. 4F Rank the situations based on the magnitude of the angular acceleration of the rods. î = Id So But z=pF₁: The Largest A = C > B Explain your reasoning and show at least one example of your calculation. x= C: α = A: α = 3 (4F) sin 90 (2M)(2L) rf sin Ⓒ mp² a= 3 (F) Sin 90 ML = α = 3(4F) sin 30 3F (M) (4L) 2ML 2M A 3F ML 3F 7/4 I 2L 3F sine =r Fsin ← Angle between rod and force mr ML OM 4L Smallest 30`- z 2 } mp² 4F с OM L OF
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