The relation between the S.I. unit of force and the weight of a 1kg mass is :
A
1kgf=1N
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B
1kgf=0.98N
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C
1kgf=9.8N
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D
1N=9.8kgf
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Solution
The correct option is C1kgf=9.8N Answer is C.
The S.I. unit of force is Newton, the absolute unit of force in the International System of Units (SI units). It is defined as that force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second.
S.I. unit of Force = Mass(kg)×AccelerationduetoGravity(g)(9.8m/s2) = Newton
Force (Newton) = Mass x g
For example, The weight (force) of a mass of 1 kg = 1 x 9.8 = 9.8 N