Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 77GP
Your groceries are in a bag with paper handles. The two handles together will tear off if a force greater than 51.5 N is applied to them. What is the greatest mass of groceries that can be lifted safely with this bag, given that the bag is raised (a) with constant speed, or (b) with an acceleration of 1.25 m/s2?
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You find it takes 190 N of horizontal force to move an unloaded pickup truck along a level road at a speed of 2.4 m/s . You then load up the pickup and pump up its tires so that its total weight increases by 42%while the coefficient of rolling friction decreases by 19%. Now what horizontal force will you need to move the pickup along the same road at the same speed? The speed is low enough that you can ignore air resistance..
Three crates with various contents are pulled by a force Fpull
3677 N across a horizontal, frictionless roller-conveyor system.
The
group
of boxes accelerates at 1.430 m/s? to the right. Between each adjacent pair of boxes is a force meter that measures the
magnitude of the tension in the connecting rope. Between the box of mass m¡ and the box of mass m2, the force meter reads
F12
1397 N. Between the box of mass m2 and the box of mass m3, the force meter reads F23 = 2351 N. Assume that the ropes
and force meters are massless.
m,
m2
m3
F
pull
FRAGILE
FRAGILE
FRAGILE
F.
12
F.
23
What is the total mass of the three boxes?
Mtotal
kg
What is the mass of each box?
kg
m2
kg
II
A 3 kg and a 5 kg box rest side-by-side on a smooth, level floor. A horizontal force of 32 N is applied to the 3 kg box pushing it against the 5 kg box, and, as a result, both boxes slide along the floor. What is the magnitude of the contact force between the two boxes? Assume no friction.
Chapter 5 Solutions
Physics (5th Edition)
Ch. 5.1 - Two forces have magnitudes F1 and F2. If these...Ch. 5.2 - Which of the following statements is correct? A: A...Ch. 5.3 - The acceleration of an object has a magnitude a....Ch. 5.4 - A force F pushes on three boxes that slide without...Ch. 5.5 - An object is acted on by a single force that is at...Ch. 5.6 - When a certain person steps onto a scale on solid...Ch. 5.7 - Figure 5-23 shows four identical bricks that are...Ch. 5 - Driving down the road, you hit the brakes...Ch. 5 - Youve probably seen pictures of someone pulling a...Ch. 5 - As you read this, you are most likely sitting...
Ch. 5 - When a dog gets wet, it shakes its body from head...Ch. 5 - A young girl slides down a rope. 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