A toy boat is being pushed with a force of 40.0 N [W] by its engines in a pond. A strong wind blows from the north, which exerts a force of 30.0 N on the boat. What is the net force acting on the ferry?   Question 1 options: a 50.0 N [W 36.9° S] b 70.0 N [W 53.1° S] c 50.0 N [W 53.1° S] d 70.0 N [W 36.9° S]

Two forces are acting on a hook at the same time, determine the resultant force along x axis: OO 260x(5/13) 200 sin 30° - 260x(5/12) - 200 sin 30 260x(12/13) - 200 sin 30° 260x(12/13) - 200 cos 30º 200 cos 30° - 260x(5/13) F₁ = 200 N 30° 13 12 F₂ = 260 N

A block with weight 50 N stops on an inclined plane which has angle 0 = 30° to the horizontal. Two observers try to analyse the forces on the block with their preferred reference. Observer A uses coordinate (xẠ, YA) as his reference while observer B uses coordinate (Xg, Yg) as her reference(See figure 1). YA Observer A Block Observer B XA W XB Figure 1. (a) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer A. (b) Decompose the weight, W and the normal force, Ñ in the coordinate system of observer B. (c) Determine the magnitude of friction obtained by A and B respectively if the block tends to slide down. (d) Are the two answers in part (c) same or different? What does the result imply?

A 128 lb person steps into an elevator at the ground floor. The elevator accelerates upward at 5.0 ft/s^2 until reaching a velocity of 24 ft/s. It then holds this velocity until decelerating (a=-5.0 ft/s^2) to a stop at the top floor. What is the normal force on the person in each of the three phases of this trip?