Final answer:
Examples of mechanical systems in daily life include using a lever, a pulley system, and a bicycle.
Step-by-step explanation:
One example of work and mechanical systems we use in our daily life is lifting a heavy object using a lever. For example, using a crowbar to lift a rock or using a wrench to loosen a tight bolt.
Another example is using a pulley system to lift objects. For instance, using a rope and pulley to lower a bucket into a well or using a block and tackle system to lift heavy furniture.
Lastly, using a bicycle is also an example of a mechanical system. When you pedal, your muscles provide the force that moves the pedals and wheels, propelling you forward.