A) \[0.8g\text{ }m/{{s}^{2}}\]
B) \[0.4g\text{ }m/{{s}^{2}}\]
C) \[0.5g\text{ }m/{{s}^{2}}\]
D) zero
Correct Answer: B
Solution :
Let, tension in the spring is T For the hanging block, \[mg-T=ma\] and for the block horizontal surface \[T=\mu \,mg=ma\] On adding equations (i) and (ii), we get \[a=\frac{mg-\mu mg}{2m}\] If \[m=1kg.\] \[\mu =0.2,\] then \[a=0.4\,gm/{{s}^{2}}\]You need to login to perform this action.
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