Make a drawing to illustrate: A bicycle is of mass 32 kg. its wheels touch the ground at point A and B .1.50m apart and the center of gravity of the bicycle lies vertically above a point half way along the line AB. The Rider sitting on the bicycle is of mass 90 kg and his center of gravity lies vertically above a point on AB=0.50m in front of B

Here is a drawing illustrating the given description:

```
| Rider |
| 0.5 m |
| |
o-------------------o
A B
(Bicycle)
```

In the drawing, the bicycle is represented by the line segment connecting points A and B. The wheels touch the ground at points A and B, which are 1.50m apart. The center of gravity of the bicycle is located vertically above a point halfway between A and B.

The rider is represented as a shorter line segment above the bicycle, seated 0.50m in front of point B. The center of gravity of the rider is situated vertically above a point on the line AB, 0.50m in front of B.

Please note that the proportions of the drawing may not be accurate and are for illustrative purposes only.

Sure! Here's a step-by-step drawing to illustrate the given scenario:

Step 1: Start by drawing a horizontal line to represent the ground.

Step 2: Draw two vertical lines coming down from the ends of the ground line to represent the bicycle wheels. Label them as "A" and "B".

Step 3: Measure and mark a distance of 1.50m between points A and B on the ground line.

Step 4: Draw a vertical line at the mid-point between A and B. This line represents the center of gravity of the bicycle.

Step 5: Measure and mark a distance of 0.50m in front of point B on the ground line.

Step 6: Draw a vertical line from the marked point in front of B, representing the rider.

Step 7: Draw a small circle at the top of the vertical line to represent the head of the rider.

Step 8: Draw a horizontal line connecting the top of the rider's head to the vertical line representing the bicycle to connect the rider and the bicycle.

Step 9: Add some details to complete the drawing, such as the seat, pedals, and handlebars.

Remember, the proportions and scale will vary depending on the size of your drawing, but these steps should help you visualize the scenario described.

To begin illustrating this scenario, you can follow these steps:

Step 1: Start with a blank sheet of paper or a digital drawing canvas.
Step 2: Draw a straight horizontal line to represent the ground.
Step 3: Draw two circles on the ground, representing the bicycle wheels touching the ground. Make them a suitable size, keeping in mind that the wheels are 1.50m apart.
Step 4: Draw a vertical line above the midpoint between the two wheels. This line represents the bicycle's center of gravity, and it should be aligned with the midpoint between the wheels.
Step 5: Draw a square or a rectangle on top of the vertical line to represent the frame of the bicycle. This can be a simplified shape without needing too many details.
Step 6: Draw a smaller square or rectangle towards the front end of the bicycle frame to represent the rider sitting on the bicycle. Make sure this shape is proportionate to the overall bicycle frame.
Step 7: Draw a vertical line above the front end of the rider's shape, representing the rider's center of gravity, which should be located at a point 0.50m in front of the rear wheel (B).
Step 8: Add any additional details, like handlebars, pedals, or other features you'd like to include to make the drawing more realistic.

Remember, this is a simplified representation of the scenario, and you can adjust the level of detail and style to suit your preferences.