A pulley system has a velocity ratio 3. draw a diagram showing the point of applicationi and direction of load (L), effort (E) and tension (T). It lifts a load of 150 N by an effot of 60 N. calculate its mechanical advantage. Is the pulley system ideal ? Give reason.

Answer

To solve the problem step by step, we will follow these instructions:

### Step 1: Draw the Diagram
We need to illustrate a pulley system with a velocity ratio of 3. This means we will have three pulleys in the system. The upper two pulleys will be fixed, and the lower one will be movable.

- **Diagram Description**:
- Draw three pulleys, with the top two being fixed and the bottom one being movable.
- Indicate the direction of the load (L = 150 N) acting downwards.
- Indicate the direction of the effort (E = 60 N) acting upwards.
- Show the tension (T) in the rope connecting the pulleys.

### Step 2: Calculate Mechanical Advantage (MA)
Mechanical Advantage (MA) is defined as the ratio of the load (L) to the effort (E).

- **Formula**:
\[ MA = \frac{Load (L)}{Effort (E)} \]

- **Substituting the values**:
\[ MA = \frac{150 \, N}{60 \, N} = 2.5 \]

### Step 3: Determine if the Pulley System is Ideal
An ideal pulley system is one where the mechanical advantage (MA) is equal to the velocity ratio (VR).

- **Given**:
- Velocity Ratio (VR) = 3
- Mechanical Advantage (MA) = 2.5

- **Comparison**:
Since MA (2.5) is less than VR (3), the pulley system is not ideal.

### Final Summary
1. **Diagram**: A pulley system with three pulleys, showing the load acting downwards and the effort acting upwards.
2. **Mechanical Advantage**: 2.5
3. **Is the pulley system ideal?**: No, because MA < VR.

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