A 1,460-N crate is being pushed across a level floor at a constant speed by a force F of 290 N at an angle of 20.0° below the horizontal, as shown in the figure a below. 20.0 20.0° (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 290-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s

A 1,460-N crate is being pushed across a level floor at a constant speed by a force F of 290 N at an angle of 20.0° below the horizontal, as shown in the figure a below. 20.0 20.0° (a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.) (b) If the 290-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a). m/s

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 2STP

See similar textbooks

Similar questions

A black widow spider hangs motionless from a web that extends vertically from the ceiling above. If the spider has a mass of 1.5 g, what is the tension in the web?
A force is applied to a block on an inclined surface as shown in the diagram. What magnitude force is necessary to move the block up the incline at a constant rate? The mass of the block is 9.2 kg, the angle of the incline is 44.4°, and the coefficient of kinetic friction between the incline and the mass is 0.032
A man exerts a northward force of 100 newtons on a 50 kilogram box which sits on a level floor. If the frictional force is 80 newtons, what is the magnitude of the northward acceleration of the box?
a body having a mass of 40kg rests on a horizontal table and it is found that the least horizontal force required to move the body is 90 N. what is the coefficient of friction? how much word is done in moving the body along the surface of the table through a distance of 3m?
The block shown in the figure is along a frictionless horizontal surface The block's mass is m = 4.70 kg , the magnitude of the applied force is F= 26.5N, and the angle of the applied force from the horizontal is theta = 26.0 degrees. What is the magnitude of the normal force acting on the block.
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.359 and he exerts a constant horizontal force of 281 N on the crate. ) Find the magnitude and direction of the net force on the crate while it is on the rough surface Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude N=? Find the net work done on the crate while it is on the rough surface.J=? Find the speed of the crate when it reaches the end of the rough surface.m/s=?
A baseball player of mass 85.0 kg travelling at an initial speed of 7.00 m/s slides along a horizontal playing field before coming to a complete stop after 1.70 s. What is the coefficient of kinetic friction between the player and the field? Answer to three decimal places .
A 1,549Kg car is being towed to the right with an upwards cable at an angle of 29.4 degrees above the horizontal. if the tension in the cable is 3,481N, how much is the normal force the ground exerts on the car?
A 4.00 kg box sits atop a 10.0 kg box on a horizontal table. The coefficient of kinetic friction between the two boxes and the lower box and table is 0.600, while the coefficient of static frction between these same surfaces is 0.800. A horizontal pull of 150.0 N to the right is exerted on the lower box, and the boxes move together. What is the friction force on the upper box?
A box of bananas weighing 40.0 NN rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.40 and the coefficient of kinetic friction is 0.20. If no horizontal force is applied to the box and the box is at rest, how large is the friction force exerted on the box? My question, what is the equation to solve for the force of friction? what affect do the kinetic and static friction have on this?
Here we have a block of mass (m=2.50kg) resting on a place inclined at an angle of ø=30° to the horizontal. The coefficient of static friction between the block and the plane is Ustatic = 0.135 and the block is stationary but just on the point of sliding up the slope. The diagram shows the four forces acting on the block: an applied force F1 acting up the slope, the block's weight mg, the normal reaction force N and the force of static friction, Ff. In this case, the force of static friction acts down the slope, opposing the tendency of the block to move up the slope. Find the the maximum magnitude of the applied force F1 that can be exerted if the block is to remain stationary.
A heavy sled is being pulled by two people, as shown in the figure. The coefficient of static friction between the sled and the ground is 0.571 , and the kinetic friction coefficient is 0.411 . The combined mass of the sled and its load is M=366 kg . The ropes are separated by an angle of 24.0° , and they make an angle 29.7° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope tension required to get the sled moving? If this rope tension is maintained after the sled starts moving, what is the sled's acceleration?