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HW2 - of 3.00 kg and can slide along a rough plane inclined...

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Exam Name___________________________________ ESSAY. Solve the following problems 1) A 1.20 - kg ball is hanging on the end of a rope. The rope makes an angle 25.0° from the vertical when a 15.0 m/s horizontal wind blows. If the wind's force on the rope is negligible, what is the drag force on the ball? FIGURE 5 - 7 2) A ship is being pulled through a harbor by two tug boats at constant velocity as shown in Fig. 5 - 7. The lines attached to the two tug boats have the same tension, 200,000 N. The lines each make an angle 28.0° to the direction the ship is being towed. What is the magnitude of the drag force on the ship? FIGURE 5 - 6 3) Two masses are connected by a string which goes over an ideal pulley as shown in Fig. 5 - 6. Block A has a mass
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Unformatted text preview: of 3.00 kg and can slide along a rough plane inclined 30.0° to the horizontal. The coefficient of kinetic friction between block A and the plane is 0.400. Block B has a mass of 2.77 kg. What is the acceleration of the blocks? 4) A race car enters a flat 200-m radius curve at a speed of 20.0 m/s while increasing its speed at a constant 2.00 m/s 2 . If the coefficient of static friction is 0.700, what will the speed of the car be when the car begins to slide? 5) A 600-kg car is going over a curve with a radius of 120 m that is banked at an angle of 25° with a speed of 30.0 m/s. The coefficient of static friction between the car and the road is 0.30. What is the normal force exerted by the road on the car? 1...
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