Why is it important to understand your strength and weakness
2 answers:
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Answer:
By calculation, it can be shown that;
K =
Whereby for constant K, as increases, x also increases.
Explanation:
The experiment set up consisted of the use of a spring force to maintain the object in circular path.
The energy in the spring is given by
.
Rotational kinetic energy = ·I·ω²
Inertia, I = ·m·r²
ω =
Substituting gives
Rotational kinetic energy = ·
= ·m· v²
Equating both equations gives
K = =
Within the proportionality limit, x ∝ r
therefore we can write x = c·r which gives
=
Since = angular acceleration, α, then
m× = Angular force
Therefore K =
Therefore as Force, F increases, x also increases and the size of a spring force should be proportional to the amount of stretch in the spring.
Answer:
Explanation:
The heat (thermal energy) absorbed by the iron skillet can be found using the following equation:
(1)
Where:
is the heat (absorbed)
is the mass of the element (iron in this case)
is the specific heat capacity of the material. In the case of iron is
is the variation in temperature
Knowing this, lets rewrite (1) with these values:
(2)
Finally: