What is the mechanical advantage, neglecting...

Question 1 of 3104866636ee728f7522a1c518239

What is the mechanical advantage, neglecting friction, of tackle number 4 as shown in illustration D029DG below?

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Question 1 of 31048

Q

What is the mechanical advantage, neglecting friction, of tackle number 4 as shown in illustration D029DG below?

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🔍 Key Concepts

• Mechanical advantage in a block and tackle system • Counting the number of supporting rope parts on the moving block • Effect of where the standing end and hauling part are attached

💭 Think About

• Look at tackle 4 and count how many segments of rope are actually holding up the lower block and weight, not just passing by. • Ask yourself: if you pull 1 foot of rope on the hauling end, how far does the weight move? That ratio is the mechanical advantage (neglecting friction). • Compare tackle 4 with tackles 2 and 3: how does adding more pulley sheaves and rope parts change the share of the load each part carries?

✅ Before You Answer

• Make sure you only count the rope segments that are directly supporting the moving block and weight. • Verify whether the standing end of the line is attached to the fixed block or the moving block, as this changes the mechanical advantage by 1. • Confirm that your final mechanical advantage must be a whole number from the choices: 1, 2, 3, or 4.