A) \[4N\]
B) \[14N\]
C) \[6N\]
D) \[20N\]
Correct Answer: D
Solution :
Equation of motion when the mass slides down \[Mg\sin \Theta -f=Ma\] \[10-f=6\] \[f=4N\] Equation of motion when the block is pushed up Let the external force be\[F\] \[F-Mg\sin \Theta -f=Ma\] \[F-10-4=6\] \[F=20N\]You need to login to perform this action.
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