Eating. Your muscles in your arms and mouth use energy to feed itself. Then your body digest the food which also takes energy.

Sleep. When your tired, you don’t have much energy. It is said that you use more energy while your sleeping. But how do you become energized if you were using even more energy than before?

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3 years ago

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If in the experiment, m1 is 38 g, m2 is 63 g, and m3 is 58 g, "and m3 remains static, what is the tension in the string connecti

melomori [17]

Let's call a the acceleration of the system. The problem says that the block m3 is static, so the acceleration is zero: a=0.
Calling $T_1$ the tension of the string between m1 and m3, and $T_2$ the tension of the string between m2 and m3, the problem can be solved by writing the following system of equations:
$m_1 g-T_1=m1_a$
$T_1-T_2=m_3 a$
$T_2-m_2g=m_2a$
However, we know that a=0 and the problem asks only for $T_1$ , so we just need to solve the first equation:
$m_1 g -T_1 =0$
and so
$T_1=m_1g=0.038~kg \cdot 9.81~m/s^2 = 0.37~N$

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3 years ago