STATEMENT-1 : In simple pendulum performing `S.H.M`., net acceleration is always between tangential and radial acceleration except at lowest point.
STATEMETN-2 : At lowest point tangential acceleration is zero.

Options

A. (a)Statement I is true statement II is true, Statement II is a correct explanation for Statement I.
B. (b)Statement I is true statement II is true, Statement II is NOT a correct explanation for Statement I.
C. (c)Statement I is true, Statement II is false
D. (d)Statement I is false, Statement II is true

Explanation

To solve the problem, we need to analyze both statements given in the question regarding the simple harmonic motion (SHM) of a simple pendulum.

### Step-by-Step Solution:

**Step 1: Understanding Statement 1**
- Statement 1 claims that in a simple pendulum performing SHM, the net acceleration is always between the tangential and radial (centripetal) acceleration except at the lowest point.
- In SHM, the pendulum experiences two components of acceleration:
- **Tangential Acceleration (a_t)**: This is due to the component of gravitational force acting along the direction of motion (mg sin θ).
- **Radial Acceleration (a_r)**: This is due to the tension in the string and the component of gravitational force acting perpendicular to the direction of motion (mg cos θ).
- The net acceleration (a_net) is a vector sum of these two components. At any point other than the lowest point, the net acceleration will indeed lie between these two components.

**Conclusion for Statement 1**: True.

**Step 2: Understanding Statement 2**
- Statement 2 states that at the lowest point, the tangential acceleration is zero.
- At the lowest point of the pendulum's swing (when θ = 0), the motion is purely horizontal, and the gravitational force acts vertically downward.
- Since tangential acceleration is given by a_t = g sin θ, at θ = 0, sin(0) = 0, which means:
- **Tangential Acceleration (a_t)** = 0.

**Conclusion for Statement 2**: True.

**Step 3: Evaluating the Relationship Between the Statements**
- Both statements are true, but they describe different aspects of the motion of the pendulum.
- Statement 1 discusses the relationship between net acceleration and its components throughout the motion, while Statement 2 specifically addresses the condition at the lowest point.

### Final Conclusion:
Both Statement 1 and Statement 2 are true, but they are not directly explaining each other. Therefore, the correct answer is that both statements are true, but Statement 2 does not provide a correct explanation for Statement 1.

### Answer: Option B (Both statements are true, but Statement 2 is not a correct explanation for Statement 1).

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