Recent content by Sujith Sizon

I recently came across a lot of problems where components of Hinge Reaction were asked along different axis . What is hinge reaction ? How do i calculate it ? How do i find its direction ? Does it change angular velocity / acceleration of the body ?Sample Question ) A square lamina of side...

A function ##f(x)## is continuous in the interval ##[0,2]##. It is known that ##f(0)=f(2)=−1## and ##f(1)=1##. Which one of the following statements must be true? (A) There exists a ##y## in the interval ##(0,1)## such that ##f(y)=f(y+1)## (B) For every ##y## in the interval ##(0,1),f(y) =...

oh okay because coefficient of restitution which is amount of change in speed only along impact axis so along tangential component it ought not to change and because of impulse approximations we are neglecting gravitational force , well then i will have my equation , thanks for your time .

So you are asking me to conserve momentum along vertical as ##2mu\sin30 = 2mv\sin\alpha## But then it will mean that there is no change in its vertical component of velocity , but there should be right , only the would it be able to reach back to its initial position right ?

Okay so this impulse contact force will be along horizontal right (along the surface of contact) , then we will have to find its value( of Impulse contact force) also , how will we find that ? Im guessing J= Change in momentum along horizontal, ##J=mu\cos30 - mv\cos\alpha##

Which Impulse force ? the velocity changes only due to collision right ?

It changes but we can't conserve momentum along vertical because of gravitational force acting, right ?

Q) two identical smooth balls are projected from points O and A on the horizontal ground with the same speed of projection the angle of projection in each case is 30 The distance between O and A is 100m . The balls collide in mid air And return to their respective points of projection if...