You pull a Pendulum of effective length of 0.24m to the side through a small angle of 3.5 degrees and release. How much time does it take for the pendulum bob to reach its highest speed?

T= 2pi(l/g)^1/2

it does not depend on angle

highest speed will be at bottom

therefore time taken to reach bottom is T/4

T= 2pie underoot (L/G)sin(theta)

L-GIVEN
G-gravitation constant
theta -given

Calculate time period.

Hope, this helped you.