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Q2.m 1 and m 2 are the masses of two bodies. When a force of 5, N is applied on each body, m 1 gets an acceleration of 10 m/s ?, and m 2, 20 m/s °. If the two bodies are tied together and the same, force is applied, find the acceleration of the combined system., , Shanil EJ. HST. Sarvodaya HSS Eachome. Wayanad page 2, , , , , , www.apluseducre.blogspot.com or Whatsapp 9746544422, , , , , , , , IKITE VICTERS ONLINE CLASS 26 — 10 - 2021, , Force F=5N, acceleration al= 10 m/s?, acceleration a2 = 20 m/s?, Mass m1 =F/a1=5/10=0.5kg, Mass m2 = F/a2=5/ 20 = 0.25 kg, Total Mass m = 0.5 + 0.25 = 0.75 kg, * acceleration of the combined system,, a=Fim, a=5/0.75 = 6.67 mis 2, , Impulse, , , , , , * Impulsive force is a very large force acting for a very short time., , * Impulse of force is the product of the force and the time., Impulse = Force x time, , * The unit of impulse in ‘Ns’ or kgrn/s, , , , , , Newton’s Second Law of Motion F = ma, F=m(v-ujt, Impulse =F xt. If we substitute the above equation in this,, Impulse =m (v-u)/Atxt, =m (v-u), Impulse = mv - mu, , , , , , Impulse = Change in momentum, This is known as impulse - momentum principle. It states that a change, in momentum of an object is equal to the impulse experienced by it., , , , Assignment, , * Give examples for impulsive force