Question

Problem 22

Answer 1

Given information

Given values in this question:

The wooden block's mass:  

 

The bullet's mass:  

 

 

The block's maximum compression distance:  

 

 

The spring's stiffness:  

 

Formula used:

 

The spring's energy is estimated as

 

The block's kinetic energy is computed as

 

 

 

 

Step-by-step explanation

Step 1.

When a bullet strikes a pendulum (such as a ballistic pendulum), the starting speed of the bullet or projectile should be calculated using both the law of momentum conservation and the rule of energy conservation. Because the impact loses some usable energy, we can't exactly correlate the starting energy of the bullet with the ultimate potential energy of the pendulum in this scenario. The final useful energy is definitely less than the original energy of the bullet.