A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of magnitude F = 450 N on the rope, which is inclined at 0 = 38° to the horizontal, and the floor exerts a horizontal force of magnitude 125 N that opposes the motion. 450 N 38° 125 N (a) Calculate the magnitude of acceleration of the crate if its mass is 308 kg. m/s2 (b) Calculate the magnitude of acceleration of the crate if its weight is 308 N. m/s2

A worker drags a crate across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of magnitude F = 450 N on the rope, which is inclined at 0 = 38° to the horizontal, and the floor exerts a horizontal force of magnitude 125 N that opposes the motion. 450 N 38° 125 N (a) Calculate the magnitude of acceleration of the crate if its mass is 308 kg. m/s2 (b) Calculate the magnitude of acceleration of the crate if its weight is 308 N. m/s2

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 61P

See similar textbooks

Similar questions

For the woman being pulled forward on the toboggan in Figure 4.33, is the magnitude of the normal force exerted by the ground on the toboggan (a) equal to the total weight of the woman plus the toboggan, (b) greater than the total weight, (c) less than the total weight, or (d) possibly greater than or less than the total weight, depending on the size of the weight relative to the tension in the rope?
On Earth at sea level, a rope can sustain a maximum force of 80.7 N before breaking. What is the weight of the heaviest object it can lift vertically while accelerating with a magnitude of 3.07 m/s2 ?
Horizontal force, F1=75 N, and a force, F2= 13.3 N acting at an angle of theta to the horizontal, or apply to a block of mass m= 2.4 kg. The coefficient of kinetic friction between the block in the surface is uk= 0.2. The block is moving to the right. F1= 75 N F2= 13.3 N M= 2.4 kg (A) all of numerically for the magnitude of the normal force, Fn in Newton’s, that acts on the block if theta =30 degrees. (B) solve numerically for the magnitude of acceleration of the block, a in m/s^2, if theta =30 degrees
A spaceship lifts off vertically from the Moon, where g = 1.6 m/s2. If the ship has an upward acceleration of 1.0 m/s2 as it lifts off, what is the magnitude of the force exerted by the ship on its pilot, who weighs 735 N on Earth?
A block with mass mb=7.75 kg is suspended on a string. You pull upwards on the string creating a tension force of magnitude TYb=79.2275 N. If the upward speed of the block is 2.25 m/s right now, then what is its speed 5.5 s later?
Ed is pushing with a force of 352.9 N at an angle of θ = 56.1 degrees with respect to the vertical and Al is pushing with a force of 146.3 N at an angle of ϕ = 37.3 degrees with respect to the horizontal. If the couch has a mass of 89 kg and the coefficients of static and kinetic friction between the couch and the floor are μs = 0.53, and μk = 0.39, what is the magnitude of the force of friction exerted by the floor on the couch? I am not understanding how to solve this. I think I need to use Newtons second law but I just dont know. Can someone please show me how to do this?
A block of mass 132 kg lies on a horizontal plane. A horizontal force F of magnitude 1140 N is applied to the block causing it to move 2.8 meters. If the coefficient of friction between the block and the horizontal surface is 0.36, find the acceleration (in m/s2 ) of the block.
A child pulls on a wagon of mass 47 kg at an angle 33 degrees above the horizontal with a force of F. If the wagon accelerates at 3.7 m/s2 horizontally, what is the magnitude of the force F (in unit of N)? Assume there is coefficient of friction is 0.33, and please use g = 10 m/s2 to simplify computation.
The coefficient of friction between a 33kg exercise mat and the gym floor are us = 0.41 and uk = 0.36. Q-Once the mat is moving, what magnitude of horizontal force will keep it moving at a constant velocity?
An angle of incline is 0 degress, the mas of M1= 6.00 kg and M2= 6.50 kg at an acceleration of 5.10 m/s^2 tension in string is 30.6 N and a velocity of 4.96 m/s a. calculate the component of the weight of m1 parallel to the incline when the angle of incline is 0 degrees b. calculate the component of the weight of m1 parallel to the incline when the angle of incline is 60 degrees
A car has a mass of 1.30 × 103 kg. If the force acting on the car is 6.49 × 103 N to the east, what is the car’s acceleration? Answer in units of m/s 2 .
A 0.150 kg particle moves along an x axis according to x(t)=-13.00 + 2.00t - 4.00t2 -3.00t3, with x in meters and t in seconds. In unit-vector notation, what is the net force acting on the particle at t = 3.40 s?