In the track shown in figure section AB is a quadrant of a circle of 1 0 m radius - Science - Work and Energy

Question

In the track shown in figure section AB is a quadrant of a circle
of 1 0 m radius A block is released at A and slides without
friction until it reaches point B How fast is it moving at B, the
bottom of the quadrant?

Dinesh Pandey · Accepted Answer

Dear Student,

Conservation of energy yields the equation,12mvB2+mghB=mghASo that,vB=2ghA-hBhA-hB=1 m  
(given)vB=2×9 8×1=4 43 m

In the track shown in figure section AB is a quadrant of a circle of 1.0 m radius. A block is released at A and slides without friction until it reaches point B. How fast is it moving at B, the bottom of the quadrant?