Let's begin by determining the equilibrium position of a seesaw pivot. you and a friend play on a seesaw. your mass
90 kg, and your friend’s mass is 60 kg. the seesaw board is 3.0 m long and has negligible mass. where should the pivot be placed so that the seesaw will balance when you sit on the left end and your friend sits on the right end?

1.2 m from the left end

Explanation:

= mass of the person = 90 kg

 = mass of friend = 60 kg

 = distance of pivot from the person or from the left end

 = length of the seesaw board = 3.0 m

 = distance of pivot from the friend or from right end = L - r = 3 - r

Using equilibrium of torque about the pivot

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.