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3 years ago

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A 5.0 kg block hangs from a spring with spring constant 2000 N/m. The block is pulled down 5.0 cm from the equilibrium position

and given an initial velocity of 1.0 m/s back towards equilibrium. a) What is the total mechanical energy of the motion

1 answer:

Svet_ta [14]3 years ago

7 0

Answer:

Explanation:i think this would help u

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In the swing carousel amusement park ride, riders sit in chairs that are attached by a chain to a large rotating drum as shown i

irinina [24]

Answer: $\theta =44.068^{\circ}$

Explanation:

Given

time taken to complete the circle=7.9 s

radius of circle(r)=15 m

velocity of rider is given by $=\frac{2\pi r}{t}$

$v=\frac{2\pi 15}{7.9}=11.93 m/s$

Let us suppose T is the tension in the chain and $\theta$ is the angle which chain makes with vertical

Therefore $T\sin \theta =\frac{mv^2}{r}-1$

$T\cos \theta=mg$ --2

Divide 1 & 2 we get

$tan\theta =\frac{v^2}{rg}$

$tan\theta =0.968$

$\theta =44.068^{\circ}$

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3 years ago

harkovskaia [24]

Answer:

Centripetal acceleration

Explanation:

Centripetal force tends to keep an object moving within a circular or curved path to maintain its course while centripetal acceleration is what tends to accelerate the object towards the centre of the curve or circle

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4 years ago

Calculate the work done when a 10 N force pushes against a cart 4.0 m

juin [17]

work = force x distance

10N and 4m gives 40 joules

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3 years ago

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The four balls have different masses and speeds.

g100num [7]

Answer:

C, A, D, B

Explanation:

You just need to calculate the momentum of each ball, by p=m*v

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pC = 2.5kg*5m/s = 12.5 kg-m/s

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Rankin them, we will have: C, A, D, B.

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PLZZ ANSWER THE QUESTION

kenny6666 [7]

Answer:

D.

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