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The particle executing simple harmonic m...

The particle executing simple harmonic motion has a kinetic energy `K_(0) cos^(2) omega t`. The maximum values of the potential energy and the energy are respectively

A

0 and `2K_(0)`

B

`(K_(0))/(2)` and `K_(0)`

C

`K_(0)` and `2K_(0)`

D

`K_(0)` and `K_(0)`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the maximum values of potential energy and total energy for a particle executing simple harmonic motion (SHM) with the given kinetic energy expression \( K(t) = K_0 \cos^2(\omega t) \). ### Step-by-step Solution: 1. **Understanding Kinetic Energy in SHM**: The kinetic energy \( K(t) \) of the particle is given by: \[ K(t) = K_0 \cos^2(\omega t) \] The maximum value of \( \cos^2(\omega t) \) is 1, which occurs when \( \cos(\omega t) = 1 \). 2. **Finding Maximum Kinetic Energy**: The maximum kinetic energy \( K_{\text{max}} \) can be calculated as: \[ K_{\text{max}} = K_0 \cdot 1^2 = K_0 \] 3. **Total Energy in SHM**: In simple harmonic motion, the total mechanical energy \( E \) is constant and is the sum of kinetic energy \( K \) and potential energy \( U \): \[ E = K + U \] At the mean position (where the kinetic energy is maximum), the potential energy is zero. Therefore, the total energy at this point is simply: \[ E = K_{\text{max}} + U_{\text{min}} = K_0 + 0 = K_0 \] 4. **Finding Maximum Potential Energy**: At the extreme positions of SHM, the kinetic energy is zero, and all the energy is potential. Thus, the maximum potential energy \( U_{\text{max}} \) is equal to the total energy: \[ U_{\text{max}} = E = K_0 \] 5. **Conclusion**: The maximum values of potential energy and total energy are both equal to \( K_0 \). ### Final Answer: - Maximum Potential Energy \( U_{\text{max}} = K_0 \) - Total Energy \( E = K_0 \)
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