
Table of Contents
What is the formula for the ballistic pendulum?
That is Vb=Vb(mb,mp,V). 2. The masses mb and mp will be measure directly. We will now apply conservation of energy immediately after the collision and at the point when the ball + pendulum reach the maximum height ‘h’.
How do you answer a projectile motion question?

What is the purpose of the ballistic pendulum lab?
The purpose of this experiment is to measure the velocity of a ball that is fired from a spring gun. For many years, police laboratories used ballistic pendulums to measure the muzzle velocities of firearms. The ballistic pendulum consisted of a large block, suspended by cords.
How do you find the velocity of a ballistic pendulum?
Work backwards, starting with the swing of the pendulum just after the collision until it reaches its maximum height. Conservation of mechanical energy applies here, so: ยฝ (m+M)vf2 = (m+M)gh. Apply conservation of momentum to determine the relationship between vf and the bullet’s speed before the collision.
How do you find the velocity of a bullet in a ballistic pendulum?

What type of collision is a ballistic pendulum?
The ballistic pendulum is a practical device in which an inelastic collision takes place.
Is a ballistic pendulum elastic or inelastic?
This is an inelastic collision, in contrast to an elastic collision where energy is conserved.
What happens to the kinetic energy in a ballistic pendulum?
In the case of a pendulum total mechanical energy is conserved. So kinetic energy of the pendulum (after firing) is fully converted to potential energy.
What are the procedures in solving projectile motion?
- Make a clearly labelled sketch of the projectile motion.
- If you are given the initial velocity, resolve it into its x and y components.
- Analyze the horizontal and vertical motion separately.
- Decide on your sign convention.
- Recall: Acceleration is always taken as 9.81 m s-2 and is directed downwards.
What is projectile motion in short answer?
Projectile motion is the motion of an object projected vertically upward into the air and moving under the influence of gravity. Projectile motion is the motion of an object projected horizontally into the air and moving independently of gravity.
How do you find the final velocity of a projectile?

Is the collision between the ballistic pendulum and the projectile ball elastic or inelastic Why?
In the case of the ballistic pendulum, the collision is inelastic because the bullet is embedded in the block.
How do you use a ballistic pendulum?

Why is momentum conserved in a pendulum?
Momentum is changing but when the bob from time(1) to time(2) is at the some position in its oscillation it will have the same momentum and ratio of kinetic energy to potential energy; thus, they are all “conserved” right.
Is kinetic energy conserved in a ballistic pendulum?
The ballistic pendulum is a device in which a projectile such as a bullet is fired into a suspended heavy wooden stationary block. Some kinetic energy gets transformed into heat and sound, and some is used to deform the block. However, momentum is conserved.
Where is Ke of the pendulum bob a maximum?
Kinetic energy is highest when the velocity is the highest. This occurs at the bottom of the pendulum.
What kind of properties can be measured using the ballistic test?
By the use of the ballistic test method, we can measure flux density, magnetizing force, B-H curve, and hysteresis loop of the specimen. We can also able to study various permeabilities and the demagnetization factor of ferromagnetic samples.
How do you find the momentum of a bullet?
Given Velocity of the bullet v = 100 m/s Mass of the bullet m = 25 g = 25/1000 kg = 0.025 kg Momentum p = ? Since p = m ร v So p = 0.025 ร 100 = 2.5 kg m/s Thus momentum of the bullet = 2.5 kg m/s.
What is the momentum of the bullet before collision what is?
The total momentum of the bullet and the gun before firing would be zero because velocities of both of them will be zero.
What is the speed of the bullet block system after the collision?
Example 3: Bullet and Block – Finding an Initial Velocity After the collision, the bullet + block has a speed of 1.2 m/s.
What are 3 types of collisions?
Collisions are of three types: perfectly elastic collision. inelastic collision. perfectly inelastic collision.
Is the collision elastic or inelastic?
Elastic collisions occur when two objects collide and kinetic energy isn’t lost. The objects rebound from each other and kinetic energy and momentum are conserved. Inelastic collisions are said to occur when the two objects remain together after the collision so we are dealing with an elastic collision.
Why do objects stick together in inelastic collision?
Figure 8.7 shows an example of an inelastic collision. Two objects that have equal masses head toward each other at equal speeds and then stick together. The two objects come to rest after sticking together, conserving momentum but not kinetic energy after they collide.
Why isn’t energy conserved during the collision of the projectile with the pendulum bob?
During this collision some of the energy may be dissipated as heat or sound, therefore mechanical kinetic energy is not conserved during the collision.