The Science Behind Ski Performance

The video explores the evolution of ski materials, highlighting the transition from wood to advanced composites like fiberglass. It discusses the importance of torsional rigidity and flexibility in ski design for different alpine sports. The role of polymers in enhancing ski performance and the continuous innovation in ski technology are also covered, with insights from Olympians and researchers.

What materials were skis originally made from?

• Fiberglass

• Plastic

• Wood

• Steel

What is fiberglass primarily used for in modern skis?

• To improve aesthetics

• To provide stiffness and torsional rigidity

• To enhance flexibility

• To make the skis lighter

What does 'torsional rigidity' refer to?

• Resistance to bending

• Resistance to shearing and twisting forces

• Ability to maintain edge grip

• Ability to absorb vibrations

What is the benefit of using fiberglass layers in downhill skis?

• Reduced weight

• Increased flexibility

• Enhanced stability at high speeds

• Improved aesthetics

Why are steel inserts used in skis?

• To make the skis lighter

• To enhance flexibility

• To decrease twisting and maintain edge grip

• To improve aesthetics

What type of ski is needed for slalom races?

• A very rigid ski

• A ski that can bend and quickly regain its shape

• A ski with maximum torsional rigidity

• A ski with no flexibility

What is the primary function of the polymer used in ski construction?

• To enhance color and design

• To increase flexibility

• To provide a smooth outer surface

• To make the skis heavier

How does wax improve the performance of skis?

• By making the skis heavier

• By reducing drag and lowering friction

• By increasing friction with the snow

• By enhancing the color of the skis

What is the role of chemists and material engineers in ski development?

• To design ski slopes

• To test new compounds and polymers for skis

• To train skiers

• To manufacture ski boots

What is the main advantage of using a polymer coating on skis?

• Increased weight

• Enhanced flexibility

• Improved color and design

• Reduced friction with snow