1.

A disc of radiusis rotatating with angular frequency 10 rad/sec. A block of mass 2 kg is to be put on the disc frication coefficient between disc and block ismu_(K)= 0.4, then find the maximum distance from axis where the block can be placed without slidding:

Answer»

`2 CM`
`3 cm`
4 cm
6cm

Solution :`mu_(K)g = omega^(2)g`
`0.4 xx 10 =(10)^(2) x`
`x = 4/100 m = 4 cm`


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