Solution:
Let the mass of the half-disc be M
Area of the half-disc will be
Mass per unit area will be
a) when the disc is half, the centre of mass is (0, 4R/3π)
b) when the disc is quarter, the centre of mass is (4R/3π, 4R/3π)
Solution:
Let the mass of the half-disc be M
Area of the half-disc will be
Mass per unit area will be
a) when the disc is half, the centre of mass is (0, 4R/3π)
b) when the disc is quarter, the centre of mass is (4R/3π, 4R/3π)