Magnitude of the acceleration of the fly

[syamsul andry]

Homework Statement

A buzzing fly moves in a helical path given by the equation
r(t)=ib sin(wt) +jb cos(wt) + kct2
Show that the magnitude of the acceleration of the fly is constant, provided b, cc, and c are
constant.

Homework Equations

v = r/t

The Attempt at a Solution

 

[PeroK]

I can't see anything there that looks like an answer.

 

[berkeman]

@syamsul andry -- Welcome to the PF.

It is much better to type your work into the forum window. It makes it easier for us to read, and it let's us use the "Quote" and "Reply" features when we want to highlight part of your work.

You can use the math symbols under the sigma symbol ∑ at the top of the reply window, and you can learn how to type math equations using LaTeX in the tutorial under INFO, Help/How-To at the top of the page. Thanks.

 

[eduyu2018]

There is not a factor "2" between $\vec(j)$ and the cos. You forgot the square in the sinus and the cosinis as well...