In this experiment, first a bullet is thrown toward the ballistic pendulum by a projectile. Then the bullet strikes the pendulum and moves this part into a definite angle. We can investigate the conservation of energy in this collision.

This apparatus is used along with a projectile apparatus which has a spring that can causes different velocities.

Ballistic pendulum technical features:

• The main frame made of plexiglass consists of a scaled protractor and one swing like part with a specified place to hold the bullet
• Stainless steel clip , stainless steel rod in 0.5 m length , cast iron stand with adjustment screws to level the apparatus
• Thread
• One meter in 3m length

Angled launched projectiles technical features:

• The main frame made of anodized aluminum
• With a clamp base vise, opening aperture: 10cm
• Scaled 0-90 degree protractor with Plummet
• Spring with spring constant 50 N/m , 3 different states to achieve different velocities (low velocity 7m/s , medium velocity 10 m/s , high velocity 15 m/s)
• Metallic shooting handle
• With screws to change the angle
• Diameter of shooting aperture: 4cm
• Diameter of Compact plastic bullet : 3cm
• Two U-shaped optical sensors made of bakelite with infra-red receiver and propagator ; 10 LUX
• Approximate weight : 2.8kg , dimensions :10cm × 15cm × 50cm

Chronometer specifications:

• Bench digital chronometer made of compact plastic with wire, on/off switch and safety fuse behind of the apparatus
• Resolution: 0.01 s
• Three input terminals and null key
• weight : 800 g and dimensions : 15cm×20cm×22cm