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Table of Contents
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1. Trajectory of a projectile
The report should have the following five sections. Each section must be written by a separate student. The whole report must be in a single Google Colab file and attached from Google Drive into the associated Google Classroom assignment.
1. Introduction and Theory
A projectile
2. Experimental Setup
List of apparatus: table, bench, ramp, marble ball, recording paper, carbon paper, adhesive tape, long meter scale, short meter scale, weight scale.
3. Method and Data
Quantity | Symbol | Value | Error ($\delta$) |
---|---|---|---|
Height of the release point | $H$ | $11$ cm | $\delta H$ = 0.1 cm |
Height of the end of the ramp | $h$ | cm | $\delta h = $ cm |
Height of the second bounce | $h'$ | cm | $\delta h' = $ cm |
Position of the first bounce | $s$ | cm | $\delta s=$ cm |
Position of the second bounce | $s'$ | cm | $\delta s'=$ cm |
Mass of the marble ball | $m$ | cm | $\delta m=$ g |
4. Analysis and Results
Using the six measurements you will have to calculate the following quantities.
4.1 Time and velocity
Time for the ball to leave the ramp and reach point A
$$ t = \sqrt{\frac{2h}{g}} $$
where gravitational acceleration $g=981\pm 1$ cm s$^{-2}$.
Horizontal component of the acceleration of the ball $a_x=?$
The unchanging horizontal velocity of the ball $ v_x = s/t$.
Vertical velocity of the ball just before it hits the table at point A $ v_y = gt = -\sqrt{2gh}$.
The time the ball takes to reach point B from point A $ t_{AB} = (s'-s)/v_x$.
Vertical component of the velocity of the ball after it leaves point A $ v_y' = g t_{AB} / 2 $.
Net velocity of the ball before it impacts at A $v = \sqrt{v_x^2+v_y^2}$.
Net velocity of the ball after it impacts at A $v' = \sqrt{v_x^2+v_y'^2}$.
4.2 Maximum height
Maximum height the ball reaches between points A and B
$$ h' = \frac{g}{2}\left(\frac{t_{AB}}{2}\right)^2. $$
4.3 Kinetic energy
Kinetic energy of the ball before collision at point A
$$E = \frac{1}{2} mv^2.$$
Kinetic energy of the ball after collision at point A
$$E' = \frac{1}{2} mv'^2.$$
4.4 Momentum
Vertical component of the momentum before reaching A $P_y=mv_y$ and after leaving A $P'_y = mv'_y$.
Horizontal component of the momentum before reaching A $P_x=mv_x$.
Net momentum before reaching A $p = mv$.
Net momentum after leaving A $p' = mv'$.
4.5 Impulse
5. Discussion and Conclusions
Report sample