An object performs SHM of amplitude 5 cm and time period 4 s. If timing is started when the object is at the centre of the oscillation i.e., x=0 then calculate.
(i) Frequency of oscillation.
(ii) The displacement at 0.5 S.

Explanation

To solve the problem step by step, we will calculate the frequency of oscillation and the displacement at 0.5 seconds for an object performing simple harmonic motion (SHM).

### Step 1: Calculate the Frequency of Oscillation

1. **Given Data**:
- Time period (T) = 4 seconds

2. **Formula for Frequency**:
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