College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A carpenter attempts to push a sanding block across the wooden board. The maximum static friction between the sanding block and the wooden board is 25N. What is the sanding block's acceleration in the x direction if the carpenter pushes the block with a force of 20N.
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- An athlete is pulling a tire that weighs 12,000 N. The coefficient of static friction between the tire and the ground is 0.42. If the angle that the rope makes with the horizontal is 24 degrees, what is the magnitude of the force that the woman must exert on the rope to just get the tire to start moving?arrow_forwardA 30 kg object sits on a table. The coefficient of static friction between the object and the table is 0.25. What frictional force must you overcome to make the object move?arrow_forwardA block is placed on a wooden plank, which is initially horizontal. One end of the plank is slowly raised to make it more and more inclined, and for a while the block stays in place on the plank and doesn't slide due to static friction. Finally, when the plank reaches an incline of 56.3oabove horizontal, the block begins to slide. What is the coefficient of static friction between the block and the plank?arrow_forward
- A heavy crate is suspended from two ropes as it is lowered from a high shelf to the floor at a constant speed. One of the ropes makes an angle of 26.5 degrees with respect to the vertical and has a tension of 653 N, while the other makes an angle of 31.5 with respect to the vertical. What is the crate's mass in kg?arrow_forwardA 5N horizontal force is applied to the block, pushing toward the right, but the block does not move. If coefficient of static friction is 0.1 and object mass is 20 Kg, what is the force of static friction of the surface on the block. (Take g=10 m/s^2)arrow_forwardA 10.0 kg object is pushed across a floor with a horizontal force of 70.0 N. If the coefficient of kinetic friction between the object and the floor is 0.100, what is its acceleration?arrow_forward
- A crate of mass 33.9 kg rests on a level surface, with a coefficient of kinetic friction 0.142. You push on the crate with an applied force of 378 N. What is the magnitude of the crate s acceleration as it slides?arrow_forwardA heavy crate is suspended from two ropes as it is lowered from a high shelf to the floor at a constant speed. One of the ropes makes an angle of 28.2 degrees with respect to the vertical and has a tension of 950 N, while the other makes an angle of 33.7 with respect to the vertical. What is the crate's mass in kg?arrow_forwardA 250 gram block on a 30 deg inclined plane is attached by an inextensible string going over a frictionless pulley to a 500 gram hanging weight. The static and kinetic friction coefficients are .25 and .123. While moving, what is the tension ii the connecting string? O 174530 dynes O 121000 dynes O 262400 dynes O 7430 dynes O 42930 dynesarrow_forward
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