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Exercise 23 through 27 describe a situation. For each, identify all forces acting on the object and draw a free-body diagram of the object.
23. A cat is sitting on a window sill.
24. An ice hockey puck glides across frictionless ice.
25. Your physics textbook is sliding across the table.
26. A steel beam, suspended by a single cable, is being lowered by a crane at a steadily decreasing speed.
27. A jet plane is accelerating down the runway during takeoff. Friction is negligible, but air resistance is not.
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