A block and tackle system of pulleys has velocity ratio 4.
Draw a neat labelled diagram of the system indicating clearly the points of application and direction of load and effort.

Explanation

To solve the question regarding the block and tackle system of pulleys with a velocity ratio of 4, we will follow these steps:

### Step 1: Understand the Block and Tackle System
A block and tackle system consists of two or more pulleys (blocks) and a rope or cable that runs through them. The system is used to lift heavy loads with less effort.

### Step 2: Identify the Components
In a block and tackle system, the main components include:
- **Pulleys (Blocks)**: These are the wheels that the rope runs over.
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