Newton’s Second Law of Motion :
Newton’s Second Law of Motion The second law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force.
Confusing…Right? :
Confusing…Right? That definition might have fused your brain but lets look at it even more simply.
The net force of an object is equal to the product of its mass and acceleration, or F=ma.
Simpler? Of course, this is the definition of the second law of motion put more easily.
Now lets mathematically formulate the second law of motion.
The Mathematical Equation :
The Mathematical Equation F is for force, M is for mass and A is for acceleration.
Now lets solve a problem with the help of this equation. F = M x A
A problem… :
A problem… How much force is needed to accelerate a 1400 kilogram car 2 m/s?
Write the formula
F = m x a
Fill in given numbers and units
F = 1400 kg x 2 m/s
Solve:
F=2800N
Derivation of Equation :
Derivation of Equation
A Daily Life Example :
A Daily Life Example When a table tennis ball comes and hits you with a lot of speed, it certainly won’t hurt you a lot.
Similarly when a cricketer hits the ball at you at the same speed the ball will hurt you very much and might even cause a fracture.
This is because the mass of the ball is more and thus the force with which it hits you increases according to the second law of motion.
Video :
Video
Slide 9:
Thank You and Have a Lawful Day!!!