Answer:
w = 2w₀ the angular velocity of man doubles
Explanation:
In this exercise, releasing the weights reduces the moment of inertia
I= I₀ / 2
Therefore, since the platform system plus man is isolated, the kinetic moment must be conserved
L₀ = L
I₀ w₀ = I w
I₀ w₀ = I₀ / 2 w
w = 2w₀
therefore the angular velocity of man doubles
Answer:
Explanation:
Given:
mass of glass cup,
initial temperature of glass,
final temperature of glass,
specific heat of glass,
So, the heat energy absorbed by the cup to reach the final temperature is given by:
where:
= change in temperature
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