ATA ATA Bow Tech Bow Mechanics & Physics 3

Question 1

What is the significance of 'timing' in a two-cam compound bow?

Accepted Answer

Both cams must reach full rotation at the same moment for optimal efficiency and arrow flight

Answer

Proper cam timing ensures both cams rotate synchronously, maximizing energy transfer and producing a level, consistent nock travel.

Question 2

How does arrow total weight (grains) affect kinetic energy versus arrow speed?

Accepted Answer

Heavier arrows carry more kinetic energy but fly slower; lighter arrows fly faster but carry less energy

Answer

Kinetic energy depends on both mass and velocity; heavier arrows sacrifice speed but gain momentum and penetration.

Question 3

What does 'nock travel' describe in compound bow performance?

Accepted Answer

The path the arrow nock travels from rest to brace height as the string is released

Answer

Level nock travel — where the nock moves straight forward rather than up or down — is the goal of proper cam timing and limb alignment.

Question 4

What role do bow limbs play in the energy storage and release cycle?

Accepted Answer

Limbs flex under draw weight to store potential energy, then spring back to release that energy through the string

Answer

The bending and recovery of bow limbs is the core energy-storage mechanism; limb stiffness directly influences draw weight and speed.

Question 5

What is 'peep sight alignment' and why does it matter for consistent accuracy?

Accepted Answer

The peep must align with the shooter's eye and front sight at full draw to create a repeatable aiming reference

Answer

A consistently aligned peep creates the same eye-to-sight picture every shot, which is critical for repeatable accuracy.

(ATA) Archery Trade Association Bow Technician Certification Practice Test