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Transcribed Image Text:A box is pulled at a constant speed, v, along a horizontal surface with a kinetic coefficient of friction less than 1.
The person pulls with a constant horizontal force, F, on the box.
The constant horizontal force the person pulls with:
A. Has the same size as the weight of the box.
B. Is greater than the weight of the box.
C. Is less than the weight of the box.
D. Is greater than the friction force.
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- Question 13arrow_forwardA box remains stationary after it has been placed on a ramp inclined to the horizontal. Which of the following statements must be true about the magnitude of the frictional force acting on the crate? a. It is greater than the component of the gravitational force acting down the ramp. b. It is equal ustaticFN c. It is equal to the component of the gravitational force acting down the ramp. d. It is greater than the weight of the box. e. At least it is almost equal to the weight of the box. If an object of mass m moves with constant speed v, the net force on the object is: a. mv b. ma c. mg d. None of these answers is correct e. 0arrow_forwardA) A woman exerts a constant horizontal force on a large box. As a result, the box moves across a horizontal floor at a constant speed "v0". The constant horizontal force applied by the woman: has the same magnitude as the weight of the box. is greater than the weight of the box. has the same magnitude as the total force which resists the motion of the box. is greater than the total force which resists the motion of the box. is greater than either the weight of the box or the total force which resists its motion. B) If the woman in the previous question doubles the constant horizontal force that she exerts on the box to push it on the same horizontal floor, the box then moves: with a constant speed that is double the speed "v0" in the previous question. with a constant speed that is greater than the speed "v0" in the previous question, but not necessarily twice as great. for a while with a speed that is constant and greater than the speed "v0" in the previous question, then with a…arrow_forward
- 2. A hand is pushing a 16N "PHYSICS" book against a wall; the coefficient of static friction between block and wall is us = 0.4. a) Analyze the forces on the block: fill in the force table and draw a force diagram. Force X y PHYSICS the shequelity for jeg 2 X b) What is the minimum force the hand must apply to the book so that it doesn't slip along the wall?arrow_forwardA spring is stretched downward by a certain length and, as a result, exerts a force in the upward direction. What happens to the force exerted by the spring if the length by which it is stretched is doubled and the spring constant is reduced by half? A. The force exerted by the spring is doubled. B. The force exerted by the spring is reduced by half. h C. The force exerted by the spring drops to zero. D. he force exerted by the spring remains unchanged.arrow_forwardGgarrow_forward
- 1. A 4.5-kg block rests on a rough horizontal table with a rope attached to it. The coefficient of static friction between the block and the table is 0.400 and the coefficient of kinetic friction between the block and the table is 0.380. The rope is pulled at an angle of 35.0° above the horizontal. What is the hardest you can pull on the rope while the block remains stationary on the table?arrow_forwardThe direction of the frictional force is a. same direction of the intended motion O b. perpendicular to the direction of the intended motion c. opposite direction of the intended motion d. along the x-directionarrow_forward1. A crate is being push by a horizontal force P to cause movement upward along the 15° incline without tipping. The crate has a mass of 30 kg. Type only the numerical values. Please indicate positve sign (+) for values in upward or rightward direction and negative sign (+) for values in downward and leftward direction. L P В A D 15° Your answer a) Determine the largest allowable coefficient of static friction between the crate and the incline. Your answer b) the corresponding magnitude of force Pin Newtons. Your answerarrow_forward
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