Question

Can force be considered as negative value??
Please help me with this

Answer 1

Force can be considered as negative value, the negative value of the force indicates the direction of force. For eg here the negative direction would be the opposite to your reference point thus negative direction in reality force can't be negative .. it is just to define the direction..

Answer 2

So force A must be acting downwards, not upwards. A 'negative' force is onethat is acting in the direction opposite to what you decide to be the positive direction (Usually, upward is +ve, downward is -ve). If the object is accelerating, then the situation is different.