Ballistic Pendelum

# Ballistic Pendelum - Objective To use the ballistic...

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Objective: To use the ballistic pendulum to measure the speed of projectile by a kinematic method to confirm the principles of conservation of linear momentum and mechanical energy Theory: The ballistic pendulum helps us find the quantity of velocity of projectiles through basic kinematics and conservation of momentum equations. In part 3, horizontal and vertical velocities are independent of each other and equating with two different equations. Horizontal velocity has no acceleration and vertical acceleration is due to gravity. Equations used for this is D=vt where D is the horizontal distance, d=1/2gt^2 where d is vertical distance. Combining these equations, we can v=D(g/2d)^1/2 In part 4, the pendulum is used to analyze the inelastic collision. We know that momentum is conserved when the projectile collides, but here the energy is not conserved. As pendulum swings up against gravity, energy is conserved as kinetic energy turns into potential energy. Equations used for this part are mv = (M+m)V which is the

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