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3 years ago

16. Calculate the mass in kg of an object that is being accelerated 12 m/s with a force of 654 N.

Physics

2 answers:

Andrej [43]3 years ago

6 0

Mass=force/acceleration

Or,mass=654/12

Or,mass=54.5kg

So,the mass is 54.5kg

Cloud [144]3 years ago

3 0

(654m/s ) / (12m/s) = 54.5 kg.

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3 years ago

A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 18.5 kg, and the

meriva

Answer:

a. $2.86 m/s^2$

b.1058 N

Explanation:

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Mass of each dog,M=18.5 kg

Mass of sled with rider,m=250 kg

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$\mu_s=0.14$

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By Newton's second law

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$a=\frac{8F-f}{8M+m}=\frac{8(185)-(0.14)(9.8)(250)}{8(18.5)+250}$

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$T=ma+\mu_s mg$

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3 years ago

A book is launched up along the rough incline. Kinetic energy given to a book at initial point is 100 J. Book comes to stop at s

den301095 [7]

Answer:

(A) 60 J

Explanation:

At state 1

KE₁=100 J

At state 2

KE₂ = 0

U₂=80 J

Given that surface is rough so friction force will act in opposite to the direction of motion

Lets take work done by friction = Wfr

From work power energy

Work done by all forces = Change in kinetic energy

Wfr + U₂=ΔKE

Wfr+80 = 100

Wfr= 20 J

Now when book slides from top position then

Wfr+ U = KEf - KEi

-20 + 80 = KEf-0

KEf= 60 J

(A) 60 J

7 0

3 years ago