Grade 11Mechanics
Question attached in the image. ...Solution required please
1 Answer
Mallikarjun Maram
Given that, 
Friction force acting on the block is given by 
Hence net force is given by 
Acceleration of the block is then 
.
Then from 
, you may find that at t = 2 sec. velocity of the block is zero, and in 2 sec the block will have displacement of 
m. (from 
).
After 2 seconds, you can see that the block cannot move, as the applied force 2 N is less than the limiting friction of 4 N. Hence total displacement after 5 sec is equal to 
m.
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