Facebook is laying on a table. A string is tied to the book and pulled lightly u
ID: 1317438 • Letter: F
Question
Facebook is laying on a table. A string is tied to the book and pulled lightly upward. The book remains in contact with the table and does not move. How do the forces exerted on the book in this case compared to the forces exerted on the book when the string is not present? List any forces that are the same in both cases. Make a separate list of the forces that change or are not present when the string is pulled.F1 Facebook is laying on a table. A string is tied to the book and pulled lightly upward. The book remains in contact with the table and does not move. How do the forces exerted on the book in this case compared to the forces exerted on the book when the string is not present? List any forces that are the same in both cases. Make a separate list of the forces that change or are not present when the string is pulled.
F1
F1
Explanation / Answer
when facebook is on the table
when string is not connected
in this case facebook is stationary it will not move
there exist friction between table and facebook(if static friction is considered)
force exerted by block upwards .weight of block acts downwards
there is no force in the horizontal direction
and also there is another force combination of book and table acts downwards
CONSIDERING STRING EFFECT
when string is tied to book tension or force in the string is more
it pulls the object upwards
if it is not moving means
there may be dominent effect of force exerted on the book is more than the string
if it includes static friction it does not move at all
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