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A block is attached with an ideal spring...

A block is attached with an ideal spring and string, and is in equilibrkum as shown in Figure. The acceleration of the block just after breaking the string is `a_(1)` and just after breaking the spring is `a_(2)`. Then

A

`a_(1) = (5g)/(8)`

B

`a_(2) - (3g)/(5)`

C

`a_(1) = (g)/(2)`

D

`a_(2)=g`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`Kx sin 53^(@) + T sin 53^(@) =mg`
`Kx=T 2Kx (4)/(5)mg Kx =(5)/(8)mg`

If string break `a_(1) = (5 mg//8)/(m) = 5g//8`
If spring break, `a_(2)=g cos 53^(@)=3 g//5`
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