A wheel r = 2 cm rolls along a chute r = 20 cm How many revolutions will the wheel have time to make?
| April 27, 2021 | education
r = 2 cm = 0.02 m.
L = 20 cm = 0.2 m.
n -?
The number of wheel revolutions n will be determined by the formula: n = L / l, where L is the length of the groove, l is the length of the wheel circumference.
We find the length of the wheel circumference by the formula: l = 2 * п * r, where п are the numbers pi, r is the radius of the wheel.
n = L / 2 * п * r.
n = 0.2 m / 2 * 3.14 * 0.02 m = 1.6.
Answer: the wheel when moving along the chute will make n = 1.6 revolutions.
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