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m A 5.00 kg block rests on a level table where there is a static coefficient of friction m A 5.00 kg block rests on a level table where there is a static coefficient of friction

m A 5.00 kg block rests on a level table where there is a static coefficient of friction - PowerPoint Presentation

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Uploaded On 2020-08-29

m A 5.00 kg block rests on a level table where there is a static coefficient of friction - PPT Presentation

a What are the dynamic and maximum static forces of friction a 2303 N 833 N b Nada c 533 mss accel d 317 mss decel e 418 N right ID: 810592

left block force friction block left friction force dynamic static accel nada 170 decel 470 table level rests coefficient

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Presentation Transcript

Slide1

m

Slide2

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

a) What are the dynamic and maximum static forces of friction

?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide3

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

b

) if it is at rest and you exert a force of 12.0 N sideways on it what happens?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide4

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

c

) if it is at rest and you exert a force of 35.0 N to the right on it, what is the acceleration of the block? Is the block accelerating (speeding up) or decelerating (slowing down)?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide5

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

d

) If it is sliding to the right and you exert a force of 7.50 N to the left, what is the acceleration of the block? Is the block accelerating (speeding up) or decelerating (slowing down)?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide6

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

e) What force is required to make the block slide to the right and accelerate to the right at 6.70 m/s/s

? Is the force to the right or the left?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide7

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

f)

If it is sliding to the right, but decelerating at 0.950 m/s/s, what force is acting on the block? Is the force to the right or the left?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left

Slide8

A 5.00 kg block rests on a level table where there is a static coefficient of friction of 0.470, and a dynamic of 0.170.

g)

It is sliding to the right at 7.20 m/s and it slides to a halt in a distance of 12.0 m. What other force besides friction is exerted on the block as it slides to a halt?

a)

23.03

N,

8.33 N

;

b

) Nada;

c

)

+5.33 m/s/s

accel

;

d

) -3.17

m/s/s

decel

;

e

)

41.8 N right;

f

)

3.58 N right; g) 2.47 N left