Question

1. Draw a Freebody Diagram of the boat T. pictured to the right. Choose an appropriate coordinate system. Write equations for F = mã. The mass of the boat is 2500 kg, the boat is being - lifted with constant velocity, and the rope angles are equal = 60°. What are the magnitude of the tensions T1 and T2 e 2. The picture shows a mass, mi, on a ramp with an angle of 37° to the horizon. It is connected by a rope over a frictionless pulley to a second mass, m2. a. Draw separate freebody diagrams for both masses, mi and m2. Choose coordinate systems for both diagrams. Note: You don't need to choose the same coordinate system for both masses. b. If the ramp turns out to be frictionless, write the equations F = må for both masses. c. How are the magnitudes of the masses' accelerations related? d. Determine the parameters under which mass mi is accelerating up the ramp, down the ramp, and in equilibrium. 37 3. A hockey player shoots a puck down the ice. At first the puck is moving at 11.20 m/s but after it covers a distance of 45.0 m, the puck is moving at only 10.98 m/s. Assume the puck is always traveling in a straight line. a. What is the coefficient of kinetic friction between the puck and the ice? b. If you doubled the mass of the puck, what would the speed of the puck be after 45.0 m if it started with the same initial speed?

Answer 1

Given m = 2500kg tree body Diagram of the boat is ) ( 6 T, S 60 > Ex=max Teos60° - T, cos 60° = 0 [:a=0] { Fy = may Tsun60°+T25 in 60° - mg=0 T, sin 60° + T, SimGo" - ing=0 2T, sin 60° = ng . since velocity is t = 72 73 Constanta) 2500 19.8 mg N T - 2x 32 2 Sin60° 14 145 N using equet T = 14145N