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Find the reading of spring balance as sh...

Find the reading of spring balance as shown in fig. Assume that mass M in equilibrium. (All surfaces are smooth).

Text Solution

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From force diagram of wedge,
`N cos 53^(@)=kx_(0)` ..(i)
From force diagram of smaller block:
`N=mg cos 37^(@)`
`Kx_(0)=N cos 53^(@)`
`kx_(0)=mg cos 37^(@) cos 53^(@)`
`kx_(0)=2.5 xx 10 xx 0.8 xx 0.6 = 12 N`.
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