Question

simplify 1/2mvP²=1/2mvQ²+mg2L. answer is VP²=VQ²+4gL. how do i get this​

Answer 1

Step-by-step explanation:

1/2mvp^2-1/2 mvq^2 =,mg2L

1/2mv(p^2-q^2)=mg2L

=p^2-q^2= 2mg2L/mv

p^2-q^2=4mgL/mv

v(p^2-q^2)=4gL

vp^2-vq^2 = 4gL

hence we get

vp^2=vq^2+4gL