Principle
The volocities of two gliders, moving without friction on a
demonstration track, are measured before and after collision, for
both elastic and inelastic collision.
Tasks
Elastic collision
- The impulses of the two gliders as well as their sum after the
collision. For comparison the mean value of the impulses of the
first glider is entered as a horizontal line in the graph.
- Their energies, in a manner analogous to Task 1.1.
- In accordance with the mean value of the measured impulse of
the first glider before the collision, the theoretical values of
the impulses for the two gliders are entered for a range of mass
ratios from 0 to 3. For purposes of comparison the measuring points
(see 1.1) are plotted in the graph.
- In accordance with the mean value of the measured energy of the
first glider before the collision, the theoretical values of the
energy after the collision are plotted analogously to Task 1.3. In
the process, the measured values are compared with the theoretical
curves.
Inelastic collision
- The impulse values are plotted as in Task 1.1.
- The energy values are plotted as in Task 1.2.
- The theoretical and measured impulse values are compared as in
Task 1.3.
- As in Task 1.4, the theoretical and measured energy values are
compared. In order to clearly illustrate the energy loss and its
dependence on the mass ratios, the theoretical functions of the
total energy of both gliders and the energy loss after the
collision are plotted.
Benefits
- Accurate results due to measurements with low friction: cart
with sapphire bearings
- Over the entire track length adjustable feet for a very simple
alignment of the track even on small tables
- Extremely robust accessories, for example no overloading of
carts due to elastic bearing of base plate, prevent unnecessary
breakdowns
- Detailed, illustrated step-by-step manual
- Timer 4-4 can be used for almost every experimental
requirement: distance-time law for four distances, measurement of
speed at four positions, principles of collisions, measurement of
the orbiting time of a rotary movement, the direct measurement of
the duration of a complete swing of a mechanical pendulum and for
short or long-term measurements with two 8-digit displays by
connecting each of 2 timers
What you can learn about
- Conservation of momentum
- Conservation of energy
- Linear motion
- Velocity
- Elastic loss
- Elastic collision