The answer to your problem is -2.1.
Realize "%" means "/100".
26 2/5% = 26.4% = 26.4/100 = 264/1000 = 0.264
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Answer: Greater than 10 N
Step-by-step explanation:
Given
Gravity force on metal is 10 N
But the metal piece is rising i.e. there must be an upward force greater than 10 N
Suppose the force is F
So, we can write

Any force greater than 10 N is sufficient for the metal to move upwards
The greater the amount of force faster will be the movement