SSC MTS EXAM

SSC

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the SI unit used to measure weight?
A
Grams
B
Liters
C
Pounds
D
Newtons
Explanation: 

Detailed explanation-1: -In science and technology, the weight of a body in a particular reference frame is defined as the force that gives the body an acceleration equal to the local acceleration of free fall in that reference frame. Thus, the SI unit of the quantity weight defined in this way (force) is the newton (N).

Detailed explanation-2: -Glossary: Mass (weight) Units. The Metric System of Measurements uses the mass units: gram (g), kilogram (kg) and tonne (t).

Detailed explanation-3: -The formula for calculating weight is F = m × 9.8 m/s2, where F is the object’s weight in Newtons (N) and m is the object’s mass in kilograms. The Newton is the SI unit for weight, and 1 Newton equals 0.225 pounds.

Detailed explanation-4: -A newton (N) is the international unit of measure for force. One newton is equal to 1 kilogram meter per second squared. In plain English, 1 newton of force is the force required to accelerate an object with a mass of 1 kilogram 1 meter per second per second.

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