Question
A block of mass M is placed on frictionless surface and given a jerk by average force of F which acts for time t. What is the velocity acquired by the block?
Solution
Average force, F acts on the body for time t.
Therefore, impulse of force is,
I = Ft
Impulse is equal to change in momentum.
If V is the velocity acquired by body after jerk, then change in momentum of body will be mv.
∴ Impulse, I = Ft = MV
That is, V = Ft/M, is the velocity acquired by the block.
Therefore, impulse of force is,
I = Ft
Impulse is equal to change in momentum.
If V is the velocity acquired by body after jerk, then change in momentum of body will be mv.
∴ Impulse, I = Ft = MV
That is, V = Ft/M, is the velocity acquired by the block.
