The shear modulus of steel is 8.1 × 1010 n/m2. a steel nail of radius 7.5 × 10–4 m projects 0.040 m horizontally outward from a wall. a man hangs a wet raincoat of weight 28.5 n from the end of the nail. assuming the wall holds its end of the nail, what is the vertical deflection of the other end of the nail?

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.