Torque [Nm] = Force [N] x Force arm [m]
C=F*b=20*0.20=4 Nm
The correct answer is C
Answer:
Mechanical advantage: 4. Speed is multiplied
Explanation:
The mechanical advantage of gear combination is

where
is the number of teeth in the input gear
is the number of teeth in the output gear
Here we have

So we find

In this example, it is the speed to be multiplied: the speed of the output gear is 4 times larger than the speed of the input gear. In fact, the mechanical advantage can be rewritten as

where
is the angular speed of the input gear
is angular speed of the output gear
So re-arranging the equation, we find

so, the speed of the output gear is 4 times larger than the speed of the input gear.
Answer:
Compared to High angle, relatively less presence of Crystallographic misalignment in grain boundary for small angle is reason behind its less effectiveness in interfering with slip process
Explanation:
Because of relatively much less presence of crystallographic misalignment in grain boundary for small angle, small grain boundaries are not as effective in compare to high angle in interfering with slip process
Less crystallographic misalignment in grain boundary causes not much change in slip direction and therefore interference to slip process is minimal.