please solve it's urgent
Answers
As per the sign convention
- All the forces acting towards the right hand side will be positive
- All the forces acting towards the left hand side will be negative
- All the forces acting in upward direction will be positive
- All the forces acting in downward direction will be negative
(1) F 1 = 8 N , F 2 = 10 N are acting towards right hence they are positive
F 3 = 12 N is acting towards left hence it will be negative
F net = F 1 + F 2 + F 3
F net = (8 + 10) - 12
F net = 18 - 12
F net = 6 N ( towards the right )
(2)
F 1 = 8 N are acting towards right hence it is positive
F 2= 8 N is acting towards left hence it will be negative
F net = F 1 + F 2
F net = 8-8
F net = 0
( the block will remain stationary )
(3)
F 1 = 8 N , F 2 = 6 are acting towards right hence they are positive
F net = F 1 + F 2
F net = 8 + 6
F net = 14 N ( right )
(4)
F 1 = 8N are acting in upward direction hence it is positive
F 2= 9 N is acting in downward direction hence it will be negative
F net = F 1 + F 2
F net = 8 - 9
F net = - 1 N ( downwards)
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