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AnnyKZ [126]
3 years ago
14

Which of the following is the correct definition of mechanical energy? A. energy stored in chemical bonds of molecules B. energy

an object has because of its motion or position C. energy of an object due to the random motion of its atoms and molecules D. energy resulting from the flow of charged particles, such as electrons or ions
Physics
2 answers:
Alex787 [66]3 years ago
6 0

The correct answer is B. Energy an object has because of its motion or position

Explanation:

In physics, the mechanical energy of a body or object is determined by the position and/or motion. Due to this, the mechanical energy includes both the kinetic energy (energy during movement) and the potential energy (energy according to location or stored energy). Additionally, the mechanical energy as other types of energy is constant if no forces are acting over it in an ideal system, but in reality, this type of energy is influenced by external forces, for example, friction. Thus, the correct definition of mechanical energy is " Energy an object has because of its motion or position".

Lubov Fominskaja [6]3 years ago
5 0

Which of the following is the correct definition of mechanical energy?

B. energy an object has because of its motion or position

Hope this answers your question!

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Explanation:

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The end point of a spring oscillates with a period of 2.0 s when a block with mass m is attached to it. When this mass is increa
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Answer: The end point of a spring oscillates with a period of 2.0 s when a block with mass m is attached to it. When this mass is increased by 2.0 kg, the period is found to be 3.0 s.  Then the mass m is 0.625kg.

Explanation: To find the answer, we need to know more about the simple harmonic motion.

<h3>What is simple harmonic motion?</h3>
  • A particle is said to execute SHM, if it moves to and fro about the mean position under the action of restoring force.
  • We have the equation of time period of a SHM as,

                                          T=2\pi \sqrt{\frac{m}{k} }

  • Where, m is the mass of the body and k is the spring constant.
<h3>How to solve the problem?</h3>
  • Given that,

               T_1=2s\\m_1=m\\m_2=m+2kg\\T_2=3s

  • We have to find the value of m,

              T_1=2\pi \sqrt{\frac{m}{k} } \\T_2=2\pi \sqrt{\frac{m+2}{k} } \\\frac{T_1}{T_2} =\sqrt{\frac{m}{m+2} }\\\frac{2}{3} =\sqrt{\frac{m}{m+2} }\\\\

               m=\frac{5}{8} =0.625kg

Thus, we can conclude that, the mass m will be 0.625kg.

Learn more about simple harmonic motion here:

brainly.com/question/28045110

#SPJ4

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