Question 98001
directly means as one thing gets larger, another thing also gets larger .. x=ky (where k is a constant)


inversely means as one thing gets larger, another thing gets smaller ... xy=k


let w=weight, if m is the mass and r is the radius; then w(r^2)=km ... w=km/(r^2)


when r=1 and m=1, w=180; so k=180 ... w=180(1)/(1^2)


when r=3 and m=2 ... w=180(2)/(3^2) ... w=40