Answer to Question #114449 in Mechanics | Relativity for Jason Grace

Question

A simple pendulum swings freely and rises at the end of its swing to a position 8.5 cm above its lowest point. What is its speed at its lowest point?

Answer using Grade 11 Conservation of Energy and Momentum please!

Answer 1

Here total mechanical energy conservation will take place

$K_i+P_i=K_f+P_f$

$0+m\times10\times0.085=0.5mv^2+0\\v^2=0.85\\v=0.92 m/s$