Hi can someone please help me with this. I would really appreciate it. It’s kind of urgent. Thank u so much!

a) The system is in equilibrium

b) No other force is acting on the system

Explanation:

a) The forces in a system is balanced until and unless there is equal and opposite force acting on the system. In this image the upward force is equal to the downward force on the book and the table and hence it is in equilibrium

b) An object which is in static mode, produces downward force because of weight and in response to that a normal reaction is produced in upward direction. Apart from these two forces, no other force is acting on this book and table system.

it's filtration, but this is an assumption so my apologies if i got this

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.