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Four 2 kg masses are connecte dby 1.4 m ...

Four 2 kg masses are connecte dby `1.4` m spokes to an axle. A force of 24 N acts on a lever `1/2`m long to produce angular acceleration `alpha`. The magnitude of `alpha` (in rad `s^(-2)` is the angle between r and F is `30^(@)`.

A

24

B

12

C

6

D

3

Text Solution

Verified by Experts

b)As, force x distance = `rho = Ialpha`
`rArr Fsin30^(@) xx 1/2 = 4[2 xx(1/4)^(2)]alpha`
or `24 xx 1/2 xx 1/2 = alpha/2`
`therefore` `alpha = 12rads^(-2)`
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