Mechanics> rotational motion...
one end of uniform rod of mass m and length l is clamped.the rod lies on smooth horizontal surface and rotates about its clamped endat an uniform angular velocity w.what is the horizontal component of force exerted by clamp on rod?
2 Answersthank you for puting up this que.
may be -mw2r-centripetal force
Dear Apoorv Jain
In rotational motion the angular velocity is constant for all points.Consider a small piece of mass "dm" then force is dF.
dF=(dm)xw2
L length→M mass
for small portion dx→?
=Mdx/L
now F=∫(M/L)w2 x dx between limits 0 to L.
Finally F=(1/2)MLw2
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