Question
State Newton’s second law of motion. Define dyne and newton. Establish a relationship between them.
Answer
Newton’s second law of motion states that the force acting on an object is directly proportional to its mass and acceleration, and is given by the equation F = ma.
Dyne is a unit of force used in the CGS system of units. It is defined as the force required to impart an acceleration of 1 centimetre per second squared to a mass of 1 gram, and is denoted by the symbol “dyn”.
Newton is the SI unit of force, defined as the force required to impart an acceleration of 1 meter per second squared to a mass of 1 kilogram, and is denoted by the symbol “N”.
1 Newton (N) = 1 kg m / s2
= 1000 × 100 g cm / s2
= 100000 dyne
= 105 dyne
∴ 1 Newton (N) = 105 dyne
