Mechanical Comprehension Challenge

What is the term for a simple machine that consists of a wheel with a groove used to redirect a force?

• Lever

• Pulley

• Wedge

• Inclined plane

Which simple machine is essentially a modified inclined plane wrapped around a cylinder?

• Wheel and axle

• Lever

• Screw

• Pulley

What is the unit of force in the International System of Units (SI)?

• Joule

• Watt

• Newton

• Pascal

Which of the following best defines mechanical advantage?

• The total energy used by a machine

• The ratio of output force to input force

• The speed at which a machine operates

• The efficiency of energy transfer in a machine

What type of lever has the fulcrum located between the effort and the load?

• Second-class lever

• Third-class lever

• Fourth-class lever

• First-class lever

Which of the following is an example of a third-class lever?

• Seesaw

• Wheelbarrow

• Tweezers

• Bottle opener

What does Newton's First Law of Motion state?

• Force equals mass times acceleration

• Every action has an equal and opposite reaction

• An object at rest stays at rest unless acted upon by a net external force

• Energy cannot be created or destroyed

What is the formula for calculating work done by a force?

Which form of energy is stored in a compressed spring?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

What is the mechanical advantage of a single fixed pulley?

• 0

• 1

• 2

• 4