Lab: Conservation of energy 2
Purpose:
Verify the conservation of energy using air track.
Equipment:
Air track, cart, ruler, air source, and motion sensor.
Experiment:
1. Set up the apparatus as the pictures show.
2. Turn on the air source and lift up the air track with certain angel so that the cart slide down.
3. Measure the distance of two magnet, and write down the angle and the distance.
4. Repeat step two and three with different angles.
5. Calculate the force acting on the cart by the formula F=mgsin(deta).
6. Enter the data into the logPro and click curve fit with power model to get the relationship between the distance and the force.
7. Integrate the force to get the formula of the work done by the force. Take the opposite of the work as the potential energy of the cart.
8. Turn on the air source, give the cart an initial velocity, and record the motion of the cart.
9. Get a new calculated column of the Kinetic Energy of the cart, Potential Energy of the cart, and the total energy of the cart.
Result:
Conclusion:
Within the a certain error, the total energy of the cart is conserved. Therefore, it verify the law of conservation of energy.
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