On the line, write the simple machine that is needed to do each task.
1. pulling the weight of 10 people in the elevator
2. driving a bicycle
3. building a piece of furniture
4. lifting window blinds
5. opening a door
1. pulling the weight of 10 people in the elevator
2. driving a bicycle
3. building a piece of furniture
4. lifting window blinds
5. opening a door
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Answer:
1 wheel and axle
2 lever, pulley, and wheel-and-axle.
3 power drill, saws, mortice and etc.
4 pulley systems
5 wheel and axle