We want to move two boxes, the first box of mass 8 kg and the second box of mass 4 kg that is on top of the first (as shown in the figure), with an acceleration 4.2 m / s2 and the coefficient of kinetic friction between the box A and floor is 0.45 , calculate the magnitude of the total friction force on box A, assuming that box B does not slide on box A due to friction between them, that is, both boxes move: with the same acceleration. B Note: Total friction refers to the friction between block A and the surface, and the friction between blocks A and B,

We want to move two boxes, the first box of mass 8 kg and the second box of mass 4 kg that is on top of the first (as shown in the figure), with an acceleration 4.2 m / s2 and the coefficient of kinetic friction between the box A and floor is 0.45 , calculate the magnitude of the total friction force on box A, assuming that box B does not slide on box A due to friction between them, that is, both boxes move: with the same acceleration. B Note: Total friction refers to the friction between block A and the surface, and the friction between blocks A and B,

Name: We want to move two boxes, the first box of mass 8 kg and the second
Uploaded: 2024-03-20T06:57:57.000Z
Channel: Bartleby
Description: We want to move two boxes, the first box of mass 8 kg and the second box of mass 4 kg that is on top ofthe first (as shown in the figure), with an acceleration 4.2 m / s2 and the coefficient of kinetic frictiorbetween the box A and floor is 0.45 , c

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 54P: A truck collides with a car, and during the collision, the net force on each vehicle is essentially...

See similar textbooks

Similar questions

Repeat the previous problem for a situation in which the rocket sled decelerates at a rate of 201m/s2 . In this problem, the forces are exerted by the seat and the seat belt.
The front 1.20 m of a 1 400-kg car is designed as a “crumplezone” that collapses to absorb the shock of a collision. If a cartraveling 25.0 m/s stops uniformly in 1.20 m, (a) how long doesthe collision last, (b) what is the magnitude of the average forceon the car, and (c) what is the acceleration of the car? Expressthe acceleration as a multiple of the acceleration of gravity.
A person in a boat starts paddling, and it accelerates from 0 to0.70 m/s in a distance of 0.51 m. If the combined mass of the person andthe boat is 83 kg, what is the magnitude of the net force acting on theboat?
A 63 kg astronaut drifting with 7.0 m/s to the right with respect to a spacecraft uses a jetpack to slow down. If ittakes 14.0 s to come to a stop with respect to thespacecraft, what is the force exerted by the jetpack?
A wooden ball of weight 196 newtons is dropped vertically from a height of 100 meters above the ground. Throughout the fall, drag is present by a factor 4v due to air resistance, where v is the velocity of the ball at time t (in seconds). After how many seconds will the ball impact the ground? Assume that the net force acting on the ball is modeled by m(dv/dt) = mg – kv, where m is the mass of the ball. Also, assume that there is no initial velocity and that the acceleration due to gravity g is 9.8 meters per second squared. Do not round off intermediate steps. Round off the final answer to two decimal places.
Most of us know intuitively that in a head-on colli-sion between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Whyis this? Many people imagine that the collision forceexerted on the car is much greater than that exerted onthe truck. To substantiate this view, they point out that thecar is crushed, whereas the truck is only dented. This ideaof unequal forces, of course, is false; Newton’s third lawtells us that both objects are acted upon by forces of thesame magnitude. The truck suffers less damage because it is made of stronger metal. But what about the two driv-ers? Do they experience the same forces? To answer this question, suppose that each vehicle is initially moving at 8.00 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has mass 80.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4 000 kg for the truck. If the colli-sion time is 0.120 s, what…
If the rocket sled starts with onlyone rocket burning, what is the magnitude of its acceleration?Assume that the mass of the system is 2100 kg, the thrust Tis 2.4×104 N, and the force of friction opposing the motionis known to be 650 N. (b) Why is the acceleration not onefourth of what it is with all rockets burning?
If Alice who has a mass of 55.0 KG and is it raining at 25.0 m/s had not been wearing a seatbelt and not had an air bag then windshield would have stopped her head in 0.002s. What average force would the windshield have exerted on her?
The same rocket sled drawn is deceleratedat a rate of 196 m/s2. What force is necessary to producethis deceleration? Assume that the rockets are off. The massof the system is 2100 kg.
•A baseball of mass m and initial speed v strikes a catcher’s mitt.If the mitt moves a distance ∆x as it brings the ball to rest, what isthe average force it exerts on the ball?
A dated box of dates, of mass 5.00 kg, is sent sliding up a frictionless ramp at an angle of to the horizontal as a function of time t, the component vx of the box’s velocity along an x axis that extends directly up the ramp.What is the magnitude of the normal force on the box from the ramp?
: A wooden ball of weight 196 newtons is dropped vertically from a height of 100 meters above the ground. Throughout the fall, drag is present by a factor 4v due to air resistance, where v is the velocity of the ball at time t (in seconds). After how many seconds will the ball impact the ground? Assume that the net force acting on the ball is modeled by m(dv/dt) = mg - kv, where m is the mass of the ball. Also, assume that there is no initial velocity and that the acceleration due to gravity g is 9.8 meters per second squared. A 1.23 seconds B) 2.89 seconds C.3.25 seconds D.4.01 seconds E. 4.20 seconds F 5.00 seconds G.5.31 seconds H 6.20 seconds