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Chapter 5: Q.13b (page 128)

FIGURE EX5.13 shows an acceleration-versus-force graph for a 500gobject. What acceleration values go in the blanks on the vertical scale?

Short Answer

Expert verified

a.The acceleration of the object is2.0m/s2.

Step by step solution

01

Part.a.

Newton's second law states that the acceleration acting on an object is directly proportional to the force acting on the object and inversely proportional to the mass of the object.

a=Fm

Here, Fis the force acting on the object, and mis the mass of the object.

02

Step.2

The figure is shown below

From the figure at point(a), the force is2N

Convert the unit of mass fromto

m=500g10−3kg1g=500×10−3kg

Substitute 2Nfor F, and 500×10−3kgfor m.

a=2N500×10−3kg=4.0m/s2

Therefore, the acceleration of the object is4.0m/s2.

03

Part.b.

From the figure at point (b), the force is1N

The acceleration acting on the object is,

a=Fm

Substitute 1Nfor F, and 500×10−3kgfor m.

a=1N500×10−3kg=2.0m/s2

Therefore, the acceleration of the object is2.0m/s2.

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Most popular questions from this chapter

A single force with x-component Fxacts on a 2.0 kg object as it

moves along the x-axis. The object’s acceleration graph (ax versus t)

is shown in the figure. Draw a graph of Fx versus t.

Problems 35 through 40 show a free-body diagram. For each:

a. Identify the direction of the acceleration vector a→and show it as a vector next to your diagram. Or, if appropriate, write a→=0→

b. If possible, identify the direction of the velocity vector v→and show it as a labeled vector.

c. Write a short description of a real object for which this is the

correct free-body diagram. Use Examples 5.4, 5.5, and 5.6 as

models of what a description should be like.

Problems 42 through 52 describe a situation. For each, draw a motion diagram, a force-identification diagram, and a free-body diagram.

An elevator, suspended by a single cable, has just left the tenth

floor and is speeding up as it descends toward the ground floor.

the potential energy of two electric charges is inversely proportional to the distance between them. Two charges 30 nm apart have 1.0 J of potential energy. What is their potential energy if they are 20 nm apart?

A compressed spring is pushing a block across a rough horizontal table. How many force vectors would be shown on a free-body diagram? Name them.
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