- The ratio of the lift force (L) to the drag force ( D ) for the simple airfoil is (L/D = 10 ). If the left force on a short section of the airfoil is ( 50N), Compute the magnitude of the resultant force ( R) and the angle (0 ) which it makes with the horizontal. Air flow

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Problem 3: Let P' (mass 4 m) be an attracting particle acting on the system S. The system S is comprised of the 4 colored particles: â₂ â₁ S1 S₁ S2 S3 S4 P' mass = 2.5 m 2 m 3 m 6m mass= 4 m mass= Then, the system S possesses the following characteristics where the distance of each particle relative to P'is given: mass= S3 mass= S₂ 70₁4 dâ₁-2dâ₂ = 70 7-0 = 11da₁-10d â₂ = 6 dâ₁-5d â₂ 70→² = 14 dâ₁ +5dâ₂ 70 = 15 dâ₁-8 dâ₂ S4 OP

A person wearing long snowshoes can walk across a blanket of freshly fallen snow without sinking far into the snow because   (p.s. Google snowshoe if you don't know how one looks like)    snowshoes cover a larger area than a foot and so the pressure is reduced.            the snowshoes reduce the force of the person on the snow.            the large area of the snowshoe concentrates the force of the person to a point smaller than the foot.            snowshoes push less dense snow out of the way so the person stands on more solid ice below