Lab 8-CONSERVATION OF ENERGY PRELAB QUESTIONS 1) Look up a \"ballistic pendulum\
ID: 1583050 • Letter: L
Question
Lab 8-CONSERVATION OF ENERGY PRELAB QUESTIONS 1) Look up a "ballistic pendulum" device online. Describe how it works. 2) In this week's lab, what type of collision, elastic or inelastic, occurs when the projectile is caught by the pendulum arm? 3) What quantities are conserved (or not) in the collision in question 2: Mechanical energy? momentum? velocity? 4) For a projectile, which of the following quantities are constant during the flight: x, y, V, Y, an, ay? Which of these quantities are zero throughout the flight? 5 MacBook ProExplanation / Answer
(1)According to the concept of the work energy and power
consider a bob having mass M is suspended by a string having length L is initial at rest and a projectile having mass m
and initial velocity u and strike to the pendulum after both are strike to greater and moving with common velocity V and makes angle
basing on the law of conservation of the momentum
m1u1+m2u2=(m1+m2)v
mu+0=(m+M)V
the finial velocity V=mu/(m+M)
(2) here we observed the this system represent perfect inelastic collision because both the paraticles stick to greather after collision bothe are moving with same velocity
(3)here only momentum is conserved because the colliding bodies do not return to their original shape and size completely after collision some part of the mechanical energy conveted to potential energy so only momentum is conserved
(4) In this proces the acceleration y-axis is constant because it is equal to acceleration due to gravity
axxeleration in x-axis is zero Ax=0
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