A disc of mass $$100g$$ and radius $$10cm$$ has a projection on its circumference. The mass of projection is negligible. A $$20g$$ bit of putty moving tangential to the disc with a velocity of $$5ms-1$$ strikes the projection and sticks to it. The angular velocity of disc is

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Infinity Learn · Accepted Answer

M $$=$$ $$100$$ gm $$=$$ $$100$$ x $$10-3$$ $$=$$ $$10-1kg$$.m $$=$$  $$20gm$$ $$=$$ $$2$$ × $$10$$–$$2kgR$$ $$=$$ $$10cm$$ $$=$$ $$10$$–$$1m$$,  v $$=$$ $$5m/sAngular$$ momentum of putty before collistion,$$L1$$ $$=$$ mvR $$=$$ $$2$$ x $$10-2$$ x $$5$$ x $$10-1$$ $$=$$ $$10-2$$ $$kgm2/s$$ from $$LCAML1$$ $$=$$ $$L2$$ $$10-2=10-1$$×$$10-122+2$$×$$10-2$$×$$10-12$$ω

A disc of mass 100g and radius 10cm has a projection on its circumference. The mass of projection is negligible. A 20g bit of putty moving tangential to the disc with a velocity of 5ms^-1 strikes the projection and sticks to it. The angular velocity of disc is

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A disc of mass 100g and radius 10cm has a projection on its circumference. The mass of projection is negligible. A 20g bit of putty moving tangential to the disc with a velocity of 5ms-1 strikes the projection and sticks to it. The angular velocity of disc is

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A disc of mass 100g and radius 10cm has a projection on its circumference. The mass of projection is negligible. A 20g bit of putty moving tangential to the disc with a velocity of 5ms^-1 strikes the projection and sticks to it. The angular velocity of disc is