00:01
Let us have a look on this question.
00:01
So, in this question we are given the charge on the proton is q is equal to plus e and we have given the magnetic field b vector is equal to b i cap initial velocity v vector is equal to v naught x i cap plus v naught y j cap.
00:20
Now, we can also write it as a vector plus b vector for simplicity of the question a vector i cap b vector j cap.
00:30
Now, moving on the force on the proton.
00:33
So, force is simply q v cross b this is basic formula for the force on this proton.
00:40
So, after applying this formula what we can write it as e and v is equal to a i cap plus b j cap and cross product with b i cap.
00:53
So, finally, what we will get from this after cross product we will get minus of e b b multiply with the k cap.
01:00
Now, if i just write from the newton's third law sorry second law f is equal to m a...