A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 140.0 N at an angle of 17.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box. m/s² up the indine (b) The student now starts moving the box up a 10.0° incline, keeping her 140.0 N force directed at 17.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box? m/s² up the incline

A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 140.0 N at an angle of 17.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box. m/s² up the indine (b) The student now starts moving the box up a 10.0° incline, keeping her 140.0 N force directed at 17.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box? m/s² up the incline

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A 315 kg block on a frictionless surface was pulled by a horizontal force with magnitude 230 N to make it move along the horizontal surface. Find the normal force.
A block of mass 4.6 kg is sliding down a ramp with an initial speed of 1.5 m/s. The ramp is inclined from the horizontal by an angle theta = 34.9 degrees and the coefficient of kinetic friction is uk = 0.73. What is the magnitude of the displacement of the block along the ramp from the initial time until it stops?
A boy takes 11.8 seconds to slide down a smooth inclined plane of angle such that tan(0) = 1.6, starting from rest. How long (in seconds) he takes to slide down an identical rough inclined plane of friction coefficient 0.71, if he starts from rest?
A 20kg block is placed on a 30 degree ramp and an acceleration of 4.91m/s^2 is predicted if friction between the block and ramp is ignored. The actual measured acceleration is 3.49m/s^2. Find the Coefficient of friction between the block and the ramp.
Q 5)A force vector F =3i + 3j N is applied on 5 kg mass of body on nonfrictionless horizontal surface. The velocity function of body is v = t + 2 . find the following : 1) frictional force (fs ) 2) the coefficient of friction of surface (μ) . (answer fs =1.7 N , u =0.34)
A force F is applied to a block to move it up a θ = 27° inclined frictionless surface. If F = 72 Newton, and M =4.2 kg, what is the magnitude of the acceleration of the block?
A block with a mass of 2.0 kg is released from rest and slides down a long, smooth ramp. The incline of the ramp is 41.0 degrees, and the coefficient of kinetic friction is ?=0.259 How far will the block travel in 1.001.00 s, assuming it does not reach the end of the ramp?
A person doing a chin-up weighs 670 N, exclusive of the arms. During the first 29.0 cm of the lift, each arm exerts an upward force of 365 N on the torso. If the upward movement starts from rest, what is the person's velocity at this point? (Enter the magnitude only.)
Three forces act on a moving object. One force has a magnitude of 75.5 N and is directed due north. Another has a magnitude of 6 7.0 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object continues to move with a constant velocity? Express your answer as a positive angle south of east. (a) Number i (b) Number i Units Units
The force acting on a particle has a magnitude of 166 N and is directed 29.4° above the positive x-axis. (a) Determine the x-component of the force. (b) Determine the y-component of the force.
The figure shows an overhead view of a 0.0025 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F has a magnitude of 7 N and is at 0, = 29. Force F 2 has a magnitude of 9N and is at 02- 26. In unit-vector notation, what is the third force if the lemon half (a) is stationary, (b) has the constant velocity = (127 - 16) m/s, and (c) has the (14fi- 13t) m/s?, where t is time? (a) Number i -0.01 i+ i 3.94 jUnits (b) Number i+ į Units -0.01 3.94 (c) Number 0.31 3.61 jUnits N