<Dl> <Dd> r A − r P = a e A, r B − r P = b e B . (\ displaystyle \ mathbf (r) _ (A) - \ mathbf (r) _ (P) = a \ mathbf (e) _ (A), \ quad \ mathbf (r) _ (B) - \ mathbf (r) _ (P) = b \ mathbf (e) _ (B).) </Dd> </Dl> <Dd> r A − r P = a e A, r B − r P = b e B . (\ displaystyle \ mathbf (r) _ (A) - \ mathbf (r) _ (P) = a \ mathbf (e) _ (A), \ quad \ mathbf (r) _ (B) - \ mathbf (r) _ (P) = b \ mathbf (e) _ (B).) </Dd> <P> The velocity of the points A and B are obtained as </P> <Dl> <Dd> v A = θ _̇ a e A ⊥, v B = θ _̇ b e B ⊥, (\ displaystyle \ mathbf (v) _ (A) = (\ dot (\ theta)) a \ mathbf (e) _ (A) ^ (\ perp), \ quad \ mathbf (v) _ (B) = (\ dot (\ theta)) b \ mathbf (e) _ (B) ^ (\ perp),) </Dd> </Dl>

The fulcrum is located between the weight and the point of force application