Consider a plywood square mounted on an axis that is perpendicular to the plane of the square and passes through the center of t
1 answer:
Answer:
T= 8.061N*m
Explanation:
The first thing to do is assume that the force is tangential to the square, so the torque is calculated as:
T = Fr
where F is the force, r the radius.
if we need the maximum torque we need the maximum radius, it means tha the radius is going to be the edge of the square.
Then, r is the distance between the edge and the center, so using the pythagorean theorem, r i equal to:
r =
r = 0.5374m
Finally, replacing the value of r and F, we get that the maximun torque is:
T = 15N(0.5374m)
T= 8.061N*m
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Explanation:
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(1)
Where:
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is the initial amount of the material
is the time elapsed
is the half life of the material (the quantity we are asked to find)
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(2)
(3)
Applying natural logarithm in both sides:
(4)
(5)
Clearing :
(6)
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