1) 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 134 N at an angle of 28.0° above the horizontal. The box has a mass of 20.0 kg, and the coefficient of kinetic friction between the box and floor is 0.300. (a) Find the acceleration of the box. ______ m/s2 (b) The student now starts moving the box up a 10.0° incline, keeping her 134 N force directed at 28.0° 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 2) Neglecting frictional forces on the trailer, determine the following. (Indicate the direction with the sign of your answer. Take the forward direction to be positive.) (a) the net force on the car _______ N (b) the net force on the trailer _______ N (c) the force exerted by the trailer on the car _______ N (d) the resultant force exerted by the car on the road magnitude _______ N direction _____° (below the horizontal from the forward direction)
1) 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 134 N at an angle of 28.0° above the horizontal. The box has a mass of 20.0 kg, and the coefficient of kinetic friction between the box and floor is 0.300. (a) Find the acceleration of the box. ______ m/s2 (b) The student now starts moving the box up a 10.0° incline, keeping her 134 N force directed at 28.0° 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 2) Neglecting frictional forces on the trailer, determine the following. (Indicate the direction with the sign of your answer. Take the forward direction to be positive.) (a) the net force on the car _______ N (b) the net force on the trailer _______ N (c) the force exerted by the trailer on the car _______ N (d) the resultant force exerted by the car on the road magnitude _______ N direction _____° (below the horizontal from the forward direction)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1) 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 134 N at an angle of 28.0° above the horizontal. The box has a mass of 20.0 kg, and the coefficient of kinetic friction between the box and floor is 0.300.
(a) Find the acceleration of the box.
______ m/s2
(b) The student now starts moving the box up a 10.0° incline, keeping her 134 N force directed at 28.0° 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
2) Neglecting frictional forces on the trailer, determine the following. (Indicate the direction with the sign of your answer. Take the forward direction to be positive.)
(a) the net force on the car
_______ N
(b) the net force on the trailer
_______ N
(c) the force exerted by the trailer on the car
_______ N
(d) the resultant force exerted by the car on the road
_______ N
(b) the net force on the trailer
_______ N
(c) the force exerted by the trailer on the car
_______ N
(d) the resultant force exerted by the car on the road
| magnitude | _______ N |
| direction | _____° (below the horizontal from the forward direction) |
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