Question

For questions 5 and 6, consider a physics lecture, where an instructor “races” different round shapes by releasing them from rest at the top of an inclined plane. Her first race is between five different shapes as given in the table to the right. Assume that each shape rolls without slipping. The upper end of the ramp is 1.5 m higher than the lower end.

Shape 1 Hoop 70 grams 7.5 cm

Shape 2 Disk 140 grams 6.0 cm

Shape 3 Disk 200 grams 7.0 cm

Shape 4 Solid Sphere 200 grams 6.0 cm

Shape 5 Hollow Sphere 250 grams 5.0 cm

Which of these shapes wins the race by getting to the bottom of the ramp first? Which of these shapes loses the race by getting to the bottom of the ramp last?

Answer 1

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