Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected by a light rope (Fig. P4.39). A woman wearing golf shoes (for traction) pulls horizontally on the 6.00-kg crate with a force F that gives the crate an acceleration of 2.50 m/s 2 . (a) What is the acceleration of the 4.00-kg crate? (b) Draw a free-body diagram for the 4.00-kg crate. Use that diagram and Newton’s second law to find the tension T in the rope that connects the two crates. (c) Draw a free-body diagram for the 6.00-kg crate. What is the direction of the net force on the 6.00-kg crate? Which is larger in magnitude, T or F ? (d) Use part (c) and Newton’s second law to calculate the magnitude of F .
Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected by a light rope (Fig. P4.39). A woman wearing golf shoes (for traction) pulls horizontally on the 6.00-kg crate with a force F that gives the crate an acceleration of 2.50 m/s 2 . (a) What is the acceleration of the 4.00-kg crate? (b) Draw a free-body diagram for the 4.00-kg crate. Use that diagram and Newton’s second law to find the tension T in the rope that connects the two crates. (c) Draw a free-body diagram for the 6.00-kg crate. What is the direction of the net force on the 6.00-kg crate? Which is larger in magnitude, T or F ? (d) Use part (c) and Newton’s second law to calculate the magnitude of F .
Two crates, one with mass 4.00 kg and the other with mass 6.00 kg, sit on the frictionless surface of a frozen pond, connected by a light rope (Fig. P4.39). A woman wearing golf shoes (for traction) pulls horizontally on the 6.00-kg crate with a force F that gives the crate an acceleration of 2.50 m/s2. (a) What is the acceleration of the 4.00-kg crate? (b) Draw a free-body diagram for the 4.00-kg crate. Use that diagram and Newton’s second law to find the tension T in the rope that connects the two crates. (c) Draw a free-body diagram for the 6.00-kg crate. What is the direction of the net force on the 6.00-kg crate? Which is larger in magnitude, T or F? (d) Use part (c) and Newton’s second law to calculate the magnitude of F.
Two crates, one with mass 4.00 kg and the other with mass6.00 kg, sit on the frictionless surface of a frozen pond, connected by a lightrope (Fig. P4.37). A woman wearing golf shoes (for traction) pulls horizontallyon the 6.00 kg crate with a force F that gives the crate an accelerationof 2.90 m>s2. (a) What is the acceleration of the 4.00 kg crate? (b) Draw afree-body diagram for the 4.00 kg crate. Use that diagram and Newton’ssecond law to find the tension T in the rope that connects the two crates.(c) Draw a free-body diagram for the 6.00 kg crate. What is the directionof the net force on the 6.00 kg crate? Which is larger in magnitude, T or F?(d) Use part (c) and Newton’s second law to calculate the magnitude of F.
A 276-kg glider is being pulled by a 1 950-kg jet along a
horizontal runway with an acceleration of a = 2.20 m/s² to
the right as in Figure P4.41. Find (a) the thrust provided by
the jet's engines and (b) the magnitude of the tension in the
cable connecting the jet and glider.
Figure P4.41
A 72 kg person is parachuting and experiencing a downward acceleration of 2.2 m/s2. The mass of the parachute is 4.8 kg. (a) What is the upward force on the open parachute from the air? (b) What is the magnitude of the downward force on the parachute from the person?
Chapter 4 Solutions
University Physics with Modern Physics, Volume 2 (Chs. 21-37); Mastering Physics with Pearson eText -- ValuePack Access Card (14th Edition)
Essential University Physics: Volume 2 (3rd Edition)
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