Solution :
The angular acceleration, 
is obtained from the equation of the 
of rotational motion,
Thus,
or 
where 
is torque, F is force, d is moment arm distance, I is the moment of inertia
Thus, 
Now if the force and the moment arm distance are constant, then the 
That is when, F = d = constant, then 
.
Thus, moment of inertia, I is proportional to mass of the bar.
The mass is less for the bar in case (1) in comparison with that with the bar in case (2) due to the holes that is made in the bar.
Therefore, the bar in case (1), has less moment of inertia and a greater angular acceleration.
Answer:
the probability that at least 125 of the 500 components will have failure times larger than 20 is 0.7939
Explanation:
see the attached file
The horizontal component of the force is the product of the cosine of the angle and the magnitude of the force, Fx = (73.8 N)(cos 39) = 57.35 N. The vertical component of this force is the product of the sine of the angle and the force, Fy = (73.8 N)(sin 39) = 46.44 N.
Answer:
It helps the answer look clean. It also makes the work easier to work with.
Explanation:
Instead of writing a lot of zeros, all you have to do is add exponents to the number to show how much the decimal moved.
