Question

Direct Measurement Video: Dry-ice levitated puck on a ramp 5 of 5> Part D Assuming there is no friction, the mechanical energy is conserved throughout the video for a system that includes which of the following? Select the best answer from the choices provided. the ramp, the puck, and the Earth only the ramp, the puck, and the spring only the ramp, the puck, the Earth, and the spring Submit Request Answer In this video, the puck sits on a room temperature aluminum ramp. Warmed by the ramp, the dry ice sublimates of the bottom of the puck and forms a thin layer of CO2 gas that levitates the puck, allowing it to slide down the ramp with very low friction. This process also creates a cool and mysterious smoky appearance of the puck, perhaps contributing to Einstein's excitement. The puck eventually compresses a spring and bounces back up the ramp - with clearly bewildered Einstein looking on. While energy conservation is at the heart of this analysis, you will have to use many different concepts and ideas to get all the answers. Don't disappoint Professor Einstein! Note that the screen has a superimposed frame counter, a linear scale, and a protractor scale-all of them will be important in your analyses! Click play to watch the video below (text description of video), then answer the questions that follow. In al calculations, express your answer in appropriate SI units with three significant figures. wtated Puck on a Ramp 20 30

Answer 1

Solution:

The system would include:

The puck, ramp, spring and the earth

Explanation:

1/2 kx^2 = Energy at point A

and

mgh + 1/2 mv^2 + 1/2 Mv^2 = Energy at point B

now;

1/2 kx^2 spring

1/2 Mv^2 ramp Kinetic energy

1/2 mv^2 puck's kinetic energy

mgh potential energy between earth and puck

here; g= G(Mass of earth) / (radius of earth)^2