Understanding Mechanisms in Technology

What is a mechanism in technology?

• A mechanism is a theoretical concept with no practical application.

• A mechanism is a type of software application.

• A mechanism refers to a single component that operates independently.

• A mechanism is a system of parts that work together to perform a function.

Name three types of simple machines.

• fan, motor, pump

• screw, wedge, spring

• wheel, axle, gear

• lever, pulley, inclined plane

How does a lever work?

• A lever functions by pushing down on both ends simultaneously.

• A lever is used to create friction to hold objects in place.

• A lever works by using a fulcrum to amplify an applied force, allowing a smaller force to move a larger load.

• A lever works by rotating around a fixed point without any force applied.

What is the purpose of gears in a mechanism?

• To reduce the weight of the mechanism.

• To increase the temperature of a mechanism.

• To store energy for later use.

• The purpose of gears in a mechanism is to transmit motion and force.

Explain the difference between a fixed pulley and a movable pulley.

• A movable pulley is stationary and does not reduce effort needed to lift.

• Both pulleys are used to lift loads without changing the direction of force.

• A fixed pulley is stationary and changes the direction of force, while a movable pulley moves with the load and reduces the effort needed to lift it.

• A fixed pulley moves with the load and changes the direction of force.

What is mechanical advantage?

• Mechanical advantage is the ratio of output force to input force in a machine.

• The measure of a machine's speed

• The distance a machine can move

• The total weight a machine can lift

Describe how a wheel and axle function together.

• The wheel and axle are used only for decorative purposes.

• The wheel and axle are fixed and do not move together.

• A wheel and axle function together by allowing the wheel to rotate around the axle, facilitating movement and reducing friction.

• The axle rotates around the wheel, causing friction.

What role do springs play in mechanisms?

• Springs provide force, store energy, and enable motion in mechanisms.

• Springs are primarily used for insulation in electrical devices.

• Springs are used to create friction in mechanisms.

• Springs only serve as decorative elements in machines.

What is the function of a fulcrum in a lever system?

• The fulcrum increases the weight of the load.

• The fulcrum serves as the pivot point in a lever system.

• The fulcrum is the source of energy in the system.

• The fulcrum acts as a counterweight to the lever.

How can levers be used to lift heavy objects?

• Levers can only lift objects that are lighter than themselves.

• Levers can lift heavy objects by using a fulcrum to create a mechanical advantage.

• Levers require electricity to function properly.

• Levers work by applying heat to the object being lifted.