7. Friction, Inclines, Systems
Inclined Planes
7. Friction, Inclines, Systems
Inclined Planes
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- Multiple Choice
A 4.0-kg box sits on a frictionless inclined plane that makes a 21° angle with the horizontal. It is held in place by a cord parallel to the plane. Calculate the tension in the cord.
1323views30rank3comments - Multiple ChoiceA car is parked on a hill with a 5° slope. What is the magnitude of the friction force acting on the car?558views
- Textbook QuestionAn 8.00-kg block of ice, released from rest at the top of a 1.50-m-long frictionless ramp, slides downhill, reaching a speed of 2.50 m/s at the bottom. (a) What is the angle between the ramp and the horizontal?2321views
- Textbook QuestionA 4000 kg truck is parked on a 15 degrees slope. How big is the friction force on the truck? The coefficient of static friction between the tires and the road is 0.90.1793views2rank
- Textbook QuestionA rifle with a barrel length of 60 cm fires a 10 g bullet with a horizontal speed of 400 m/s. The bullet strikes a block of wood and penetrates to a depth of 12 cm. b. How long does it take the bullet to come to rest?775views
- Textbook Question
(II) A block is given an initial speed of 5.2m/s up the 22.0° plane shown in Fig. 4–45. <IMAGE>
(b) How much time elapses before it returns to its starting point? Ignore friction.
257views - Multiple ChoiceA 5.0-kg box slides on the surface of a ramp that rises at 37° above the horizontal. The coefficient of kinetic friction between the box and the surface of the ramp is 0.60. What is the magnitude of the acceleration of the box as it slides down the ramp?2views