A trolley is a simple machine with wheels and axles. Moving heavy loads is made easier by the wheel and axle system, which lowers friction.
By enabling objects to be moved over a flat or inclined surface with less force, a trolley illustrates mechanical advantage and efficiency concepts in physics.
In everyday life, trolleys are frequently found in places like supermarkets, airports, and workshops, demonstrating the usefulness of basic devices in reducing labor.
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An trolley is a form of a wheel and axle simple machine. The wheel allows for smooth movement or transportation of objects, while the axle supports and stabilizes the wheel. Together, they make transporting heavy loads easier by reducing friction and enabling the user to exert less force.
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A roof is not a simple machine. It is a structure built to provide shelter and protection from the elements.
A pin is classified as a type of fastener and not a simple machine. It is often used to secure two materials together.
A tack is a type of wedge, which is a simple machine that is used to push things apart or hold things together.
A projector screen is a type of lever simple machine when it is manually pulled down or rolled up. It can also be considered a pulley simple machine if it is motorized to retract or extend the screen.