I need help with my Physics problem please?

Question

I'll really appreciate it if someone could solve this.
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A scaffold is constructed by placing two supports under a 5 meter long plank. One support is located at the left end of the board while the other is located 3 meters from the left end. The board has a mass of 100 kg. and on the plank is a painter whose mass is 60 kg. The painter stands 2 meters from the left end of the scaffold.
Illustration:
http://i115.photobucket.com/albums/n305/jlsilo/illustration.jpg
a) What is the total weight of the painter and the plank?
b) What total force must the two supports provide to hold up the scaffold?
c) How much of the totl weight is on each support?

The painter begins to walk towards the right end of the scaffold.
illustration: http://i115.photobucket.com/albums/n305/jlsilo/illustration2.jpg
a) How far will he get before the scaffold begins to tip?
b) If you were in charge of safety on this operation, how would you change this scaffold to prevent a possible accident?

Answer 1

very easy question

i don't solve below level question