2. (a) What is a free body diagram? (b) Draw free body diagrams for the following...

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2. (a) What is a free body diagram? (b) Draw free body diagrams for the following cases: (i) an object sitting on a level surface (ii) an object sliding along a level surface (iii) an object in free fall (iv) an object sliding down an incline plane 3. An object weighs 50 N on Earth. What is its weight on a planet X with an acceleration due to gravity of 5.9 m/s? 4. A 5 kg cart is acted upon by a constant force of 50 N directed in the west direction. (a) What is the magnitude of the acceleration of the cart? (b) What is the direction of the acceleration of the cart? 5. A 5 kg object is 3 m away from a 6 kg object. What is the gravitational force between the two objects? 6. A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle above the horizontal (see figure). She pulls on the strap with a 35.0-N force, and the friction force on the suitcase is 20.0 N. (a) Draw a free-body diagram of the suitcase. (b) What angle does the strap make with the horizontal? (c) What normal force does the ground exert on the suitcase? e 7. A block slides down a frictionless plane having an inclination of 030 (see figure). Assuming that the block starts from rest at the top and that the length of the incline is 2.00 m, (a) Draw a free body diagram of the system? (b) What is the acceleration of the block? (c) What is the speed of the block when it reaches the bottom of the incline? 8. Two objects are connected by a light string that passes over a frictionless pulley as shown in the figure below. The incline is frictionless, and m =2.00 kg, m2 = 6.00 kg, and 0 = 55.0. (a) Draw free-body diagrams of both objects. (b) What is the accelerations of the objects? (c) What is the tension in the string? (d) What is the speed of each of the objects 2.00 s after they are released simultaneously from rest? Mg 9. Two blocks of mass 3.50 kg and 8.00 kg are connected by a mass string that passes over a frictionless pulley (see figure). The inclines are frictionless. (a) Draw free-body diagrams of the two objects. (b) What is the magnitude of the acceleration of each block? (c) What is the tension in the string? 3.50 kg 35.0 35.0 8.00 kg 10. A 9.00-kg hanging block is connected by a string over a pulley to a 5.00-kg block that is sliding on a flat table (see figure). The string is light and does not stretch; the pulley is light and turns without friction. The coefficient of kinetic friction between the sliding block and the table is 0.2. (a) Draw free-body diagrams of both objects. (b) Find the tension in the string. (c) Find the acceleration of the two objects and the tension in the string. 5.00 kg 9.00 kg 2. (a) What is a free body diagram? (b) Draw free body diagrams for the following cases: (i) an object sitting on a level surface (ii) an object sliding along a level surface (iii) an object in free fall (iv) an object sliding down an incline plane 3. An object weighs 50 N on Earth. What is its weight on a planet X with an acceleration due to gravity of 5.9 m/s? 4. A 5 kg cart is acted upon by a constant force of 50 N directed in the west direction. (a) What is the magnitude of the acceleration of the cart? (b) What is the direction of the acceleration of the cart? 5. A 5 kg object is 3 m away from a 6 kg object. What is the gravitational force between the two objects? 6. A woman at an airport is towing her 20.0-kg suitcase at constant speed by pulling on a strap at an angle above the horizontal (see figure). She pulls on the strap with a 35.0-N force, and the friction force on the suitcase is 20.0 N. (a) Draw a free-body diagram of the suitcase. (b) What angle does the strap make with the horizontal? (c) What normal force does the ground exert on the suitcase? e 7. A block slides down a frictionless plane having an inclination of 030 (see figure). Assuming that the block starts from rest at the top and that the length of the incline is 2.00 m, (a) Draw a free body diagram of the system? (b) What is the acceleration of the block? (c) What is the speed of the block when it reaches the bottom of the incline? 8. Two objects are connected by a light string that passes over a frictionless pulley as shown in the figure below. The incline is frictionless, and m =2.00 kg, m2 = 6.00 kg, and 0 = 55.0. (a) Draw free-body diagrams of both objects. (b) What is the accelerations of the objects? (c) What is the tension in the string? (d) What is the speed of each of the objects 2.00 s after they are released simultaneously from rest? Mg 9. Two blocks of mass 3.50 kg and 8.00 kg are connected by a mass string that passes over a frictionless pulley (see figure). The inclines are frictionless. (a) Draw free-body diagrams of the two objects. (b) What is the magnitude of the acceleration of each block? (c) What is the tension in the string? 3.50 kg 35.0 35.0 8.00 kg 10. A 9.00-kg hanging block is connected by a string over a pulley to a 5.00-kg block that is sliding on a flat table (see figure). The string is light and does not stretch; the pulley is light and turns without friction. The coefficient of kinetic friction between the sliding block and the table is 0.2. (a) Draw free-body diagrams of both objects. (b) Find the tension in the string. (c) Find the acceleration of the two objects and the tension in the string. 5.00 kg 9.00 kg