A) 80 kg
B) 5 0kg
C) 60 kg
D) 30 kg
Correct Answer: A
Solution :
Volume of log of word \[V=\frac{mass}{density}=\frac{120}{600}=0.2\,{{m}^{3}}\] Let\[x\]be the w Let\[x\]be the weight that can be put on the log of wood. So weight of the body\[=(120+x)\times 10\,N\] Weight of displaced liquid\[=V\sigma g=0.2\times {{10}^{3}}\times 10N\] The body will just sink in liquid if the weight of the body will be equal to the weight of displaced liquid. \[\therefore \]\[(120+x)\times 10-0.2\times {{10}^{3}}\times 10\] \[\Rightarrow \]\[120+x=100\]\[\therefore \]\[x=80\,kg\]You need to login to perform this action.
You will be redirected in
3 sec