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Viefleur [7K]
2 years ago
13

The grooved pulley of mass m is acted on by a constant force F through a cable which is wrapped securely around the exterior of

the pulley. The pulley supports a cylinder of mass M which is attached to the end of a cable which is wrapped securely around an inner hub. If the system is stationary when the force F is first applied, determine the upward velocity v of the supported mass after 4 seconds. Use the values m = 30 kg, M = 11 kg, ro = 345 mm, ri = 230 mm, kO = 250 mm, and F = 85 N. Assume no mechanical interference for the indicated time frame and neglect friction in the bearing at O. What is the time-averaged value of the force T in the cable which supports the 11-kg mass?
Physics
1 answer:
Sidana [21]2 years ago
3 0

Answer:

Answer; v= 1.2654m/s

T= 110.76N

Explanation:

Apply Momentum Principle

Fdtro - Mgridt = Iow +Mvr

Fdtro - Mgridt = mK2 v/r1 + Mvr1

85 x 3x 0.345 -11 x 9.81 x 0.23 x 3 =30 x 0.25 x 0.25 x v/0.23 + 11 x v x 0.23 =

v = 1.2654m/s

To find the timed average value

Tdt -Mgdt =MV

T x 3 - 11 x 9.81 x 3 = 11 x 0.778

T= 110.76N

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The magnitude of rate of change of electric field is 49.95\ V/m{\cdot} s.

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Given that,

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A propagating wave in space with electric and magnetic components. These components oscillate at right angles to each other. It
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A torsional pendulum consists of a disk of mass 450 g and radius 3.5 cm, hanging from a wire. If the disk is given an initial an
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To solve this problem we will use the kinematic equations of angular motion, starting from the definition of angular velocity in terms of frequency, to verify the angular displacement and its respective derivative, let's start:

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The angular displacement is given as the form:

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In the equlibrium we have to t=0, \theta(t) = \theta_0 and in the given position we have to

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Derived the expression we will have the equivalent to angular velocity

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Replacing,

\theta_0(sin(5\pi t))5\pi = 2.7

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2 years ago
A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the pl
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2 years ago
A steel ball bearing with a radius of 1.5 cm forms an image of an object that has been placed 1.1 cm away from the bearing’s sur
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Answer:

Check the explanation

Explanation:

given

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use, 1/u + 1/v = 1/f

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v = -0.446 cm <<<<<---------------Answer

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The image is virtual

The image is upright

given

R = 1.5 cm

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use, 1/u + 1/v = 1/f

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v = -0.446 cm <<<<<---------------Answer

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Kindly check the diagram in the attached image below.

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