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3 years ago

In a four-pulley system, 1200N load is raised by applying 400N effort. Calculate M.A, V.R and efficiency of pulley system.

Physics

1 answer:

ziro4ka [17]3 years ago

8 0

The M.A, V.R and the efficiency of the pulley system are 3, 4 and 75 % respectively

The Mechanical Advantage (M.A) of the pulley can be calculated using the formula below.

<h3> Formula:</h3>

M.A = Load(L)/Effort(E)............. Equation 1

From the question,

<h3>Given:</h3>

L = 1200 N
E = 400 N

Substitute into equation 1

M.A = 1200/400
M.A = 3.

For The V.R,

The number of pulley systems is equal to the Velocity ratio of the pulley.

Therefore,

V.R = 4

<h3>Efficiency:</h3><h3>Formula:</h3>

E(%) = (M.A/V.R)100.............. Equation 2

Substitute the values into equation 2

E(%) = (3/4)100
E(%) = 75 %

Hence, The M.A, V.R and the efficiency of the pulley system are 3, 4 and 75 % respectively

Learn more about pulley here: brainly.com/question/177456

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2 1100 kg cars drive east; the first moving at 30 m/s the 2nd at 15 m/s what is the magnitude of the total momentum of the syste

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<h3>Answer:</h3>

49500 kgm/s

<h3>Explanation:</h3>

Data given;

First car; Mass = 1100 kg
Velocity = 30 m/s
Second car; mass = 1100 kg
Velocity = 15 m/s

We are required to calculate the total momentum of the system.

We need to know that momentum is calculated by multiplying the velocity of a body by its mass.
Therefore;

Momentum of the first car = 1100 kg × 30 m/s

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Momentum of the second car = 1100 kg × 15 m/s

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Therefore;

Total momentum = 33,000 kgm/s + 16,500 kgm/s

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Thus, the total momentum of the system is 49500 kgm/s

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3 years ago

In a four-pulley system, 1200N load is raised by applying 400N effort. Calculate M.A, V.R and efficiency of pulley system.​

In a four-pulley system, 1200N load is raised by applying 400N effort. Calculate M.A, V.R and efficiency of pulley system.