1. What is the direction of the frictional force exerted on a coffee cup sitting
ID: 1458876 • Letter: 1
Question
1. What is the direction of the frictional force exerted on a coffee cup sitting on a stationary table?
2.What is the direction of the frictional force exerted on a coffee cup being pulled to the right across a table?
3. What is the direction of the frictional force exerted on a coffee cup sitting on a table while the table is dragged to the right and moves on a smooth horizontal surface without friction?
these are the choices available for all three questions
2.What is the direction of the frictional force exerted on a coffee cup being pulled to the right across a table?
3. What is the direction of the frictional force exerted on a coffee cup sitting on a table while the table is dragged to the right and moves on a smooth horizontal surface without friction?
these are the choices available for all three questions
a)To the left. b)Downward. C)there is no frictional force being exerted on the cup. d)Upward.Explanation / Answer
a) As the coffee cup is stationary onto the table as well as table is not moving therefore there is no any case of slipping of surfaces. Therfore, there is no frictional force being exerted on the cup.
b) When the coffee cup is pulled towards right onto the table. The frictional force acts towards the leftward direction to keep coffee cup in contact with table. Note that frictional force acts to keep two surfaces in contact. Therefore it acts towards the left. Ans To the left.
c) As the table is moving towards right therefore to keep the two surfaces in contact friction force will be acting towards right to keep coffee cup in contact with the table.
Therefore the friction force will be acting towards the right. hence, none of the option mentioned above is correct.
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