(1 point) Newton's law of cooling states that the temperature of an object changes at a rate proportional to the difference betw
een its temperature and that of its surroundings. Suppose that the temperature of a cup of coffee obeys Newton's law of cooling. If the coffee has a temperature of 195 degrees Fahrenheit when freshly poured, and 2 minutes later has cooled to 183 degrees in a room at 60 degrees, determine when the coffee reaches a temperature of 143 degrees. The coffee will reach a temperature of 143 degrees in
1 answer:
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The moment of inertia is
Explanation:
The total moment of inertia of the system is the sum of the moment of inertia of the rod + the moment of inertia of the two balls.
The moment of inertia of the rod about its centre is given by
where
M = 24 kg is the mass of the rod
L = 0.96 m is the length of the rod
Substituting,
The moment of inertia of one ball is given by
where
m = 50 kg is the mass of the ball
is the distance of each ball from the axis of rotation
So we have
Therefore, the total moment of inertia of the system is
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