Identify the forces that are operating while you are riding a bicycle.

Explanation

### Step-by-Step Solution:

1. **Identify Contact Points**: When riding a bicycle, the first step is to identify where your body makes contact with the bicycle. This includes your hands on the handlebars, your feet on the pedals, and your body on the seat.

2. **Weight Force**: The weight of the rider exerts a force downwards on the seat of the bicycle. This force is due to gravity acting on the mass of the rider.

3. **Ground Reaction Force**: The total weight exerted by the rider and the bicycle itself is transferred to the ground. This is known as the ground reaction force, which is equal to the combined weight of the rider and the bicycle.

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