The uniform 100-kg beam is freely hinged about its upper end a and is initially

ac = 2.86 m / s²

Explanation:

Image can detail the system to determine the force in the FA to understand the system into the applicated force

m = 100 kg ,  L = 3 m

∑ F = 0 ⇒ Ay - 100 kg + P * cos (45) = 0

Ay = 768.86 N

∑ Mₐ = α * I ₐ

I ₐ = m * L² / 3  ⇒  I ₐ = 100 kg * 4² m / 3

Replacing

P * sin (45) * 3 = α * 100 kg * 4² m / 3  

α = 1.193 rad / s²

ac = α *2    ⇒  ac = 1.193 rad / s²  * 2

ac = 2.86 m / s²

Explanation:

Conclusion: The speed of light is about 299, 792, 458 meters per second (about 670 million miles per hour). The Flash runs faster than that, by a considerable margin in fact. ... As far as I'm concerned the fastest base Sonic can and ever has run is around 3.5 times the speed of sound.