Let's break down the problem step by step: ## Step 1: **Understanding the Problem** You are asked to: - **Develop the activity sequence model** for each work activity described. - **Determine the normal time** (using TMU - Time Measurement Unit) for each activity. The table at the bottom gives you: - **Method Description:** What the worker is doing (e.g., Move, Control, Tool Use). - **Action:** General activity category. - **Sequence Model:** Predetermined time motion codes (A, B, G, etc.). - **TMU:** The time value (in TMU) for each sequence (to be filled/used). --- ## Step 2: **Break Down Each Activity** Let's match each activity to the table and sequence model: ### **Activity 1** > "A worker standup walk 4 steps, goes through a door and walk 6 steps and grasp light piece of wood." - **Actions:** - Stand up (General) - Walk 4 steps (Move) - Go through door (Move) - Walk 6 steps (Move) - Grasp wood (General) #### **Sequence Model** - For walking and grasping, use the sequence model for Move and General from the table. --- ### **Activity 2** > "He moves 10 steps to drilling machine and place with adjustment the piece of wood in the machine." - **Actions:** - Walk 10 steps (Move) - Place/adjust wood (Control) --- ### **Activity 3** > "He presses the button to make the machine start and it takes 28 sec to drill all the holes." - **Actions:** - Press button (Control) - Wait 28 seconds (Wait time, not TMU-related unless specified) --- ### **Activity 4** > "He grasps the piece of wood after drilling and moves to the table which is 9 steps away and set on the chair and place it on the table." - **Actions:** - Grasp wood (General) - Walk 9 steps (Move) - Place on table/chair (General/Control) --- ### **Activity 5** > "He collects 4 screws from the pin next to him and place each screw inside the hole and it requires light pressure to do so." - **Actions:** - Collect screw (General/Move) - Place screw (Tool Use) --- ### **Activity 6** > "He grasps the screwdriver near him and turns each screw 5 turns using wrist action. After that, he puts aside the screwdriver and stands up and returns to the drilling machine." - **Actions:** - Grasp screwdriver (General) - Turn screw (Tool Use) - Put aside screwdriver (General) - Stand up (General) - Return to drilling machine (Move) --- ## Step 3: **Sequence Model and TMU Calculation** The **TMU values** for each sequence (A, B, G, etc.) are not provided in the image, so we'll focus on the structure. ### **Sample for Activity 1** | Step | Method Description | Action | Sequence Model | TMU | |----------------------|-------------------|---------|---------------------|-----| | Stand up | General | Stand | A | | | Walk 4 steps | Move | Walk | A B G A | | | Go through door | Move | Walk | A B G A | | | Walk 6 steps | Move | Walk | A B G A | | | Grasp wood | General | Grasp | A B G A | | - You'd sum the TMUs for each sequence. - Repeat for each activity. --- ## Step 4: **Convert TMU to Time** - **1 TMU = 0.036 seconds** - Total Time (seconds) = Total TMU × 0.036 --- ## Step 5: **Calculate Normal Time** - Normal Time = Observed Time × Performance Rating (if given). - If not, just use Total Time calculated. --- ## Example Calculation: **Suppose** each 'A B G A' = 10 TMU (for example): - 4 steps: 10 TMU - Go through door: 10 TMU - 6 steps: 15 TMU (assuming more steps) - Grasp wood: 10 TMU **Total TMU = 10 + 10 + 15 + 10 = 45 TMU** **Total Time = 45 × 0.036 = 1.62 sec** --- ## **Summary Table for Activity 1** | Step | Sequence Model | TMU (example) | |-------------------|---------------|---------------| | Stand up | A | 5 | | Walk 4 steps | A B G A | 10 | | Go through door | A B G A | 10 | | Walk 6 steps | A B G A | 15 | | Grasp wood | A B G A | 10 | | **Total** | | **50 TMU** | | **Time (sec)** | | **1.8 sec** | --- ## **Final Answer Approach** 1. **List each micro-step** for every activity. 2. **Match the sequence model** from the table. 3. **Sum the TMU values**. 4. **Convert TMU to seconds**. 5. **Add any observed/wait times.** 6. **Report the total (normal) time for each activity.** --- **If you have the TMU values for A, B, G, etc., plug them into the steps above for precise calculations! If you provide them, I can calculate the exact times for you.**