Final answer:
The formula to calculate the height reached by a point on a pendulum or Newton's cradle is h = L - L * cos(theta).
Step-by-step explanation:
The formula for the height reached by a point on a pendulum or Newton's cradle can be calculated using trigonometry and the given length of the pendulum or string and angle through which the particle is vertically pulled up.
The formula to calculate the height is: h = L - L * cos(theta) where L is the length of the pendulum or string and theta is the angle through which the particle is pulled up.