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3 years ago

A pulley has a mechanical advantage of 1.

Physics

1 answer:

sertanlavr [38]3 years ago

7 0

Answer:

There is no mechanical advantage

Explanation:

The mechanical advantage is possible only when the force needed to lift a load is lesser than the weight of the load.

For example, is we have a mechanical advantage of 2, the force needed to lift will be 1/2 of the weight of the load, and if we have a mechanical advantage of 4, the force needed will be 1/4 of the weight of the load.

In the attached image there are clear examples of mechanical advantage with pulleys.

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A freefalling golf ball strikes the ground and excerpts a force on it which statements are true about this situation

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4 years ago

In which stage of its lifecycle does a silkworm begin to produce silk thread

IrinaK [193]

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4 years ago

The law of conservation of mass applies to all chemical reactions.

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3 years ago

What is the gravitational force on a 10 kg sled traveling at 3.5 m/s down a track?

Jobisdone [24]

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4 years ago

Two spaceships are observed from earth to be approaching each other along a straight line. Ship A moves at 0.40c relative to the

nirvana33 [79]

Answer:

0.80 c

Explanation:

The computation of speed is shown below:-

Here, The speed of the captain ship A report for speed of the ship B which is

$S = \frac{S_A + S_B}{1 + \frac{(S_AS_B)}{c^2} }$

where

$S_A$ indicates the speed of the ship A

$S_B$ indicates the speed of the ship B

and

C indicates the velocity of life

now we will Substitute 0.40c for A and 0.60 for B in the equation which is

$S = \frac{0.40c + 0.60c}{1 + \frac{(0.40c)(0.60c)}{c^2} }$

after solving the above equation we will get

0.80 c

So, The correct answer is 0.80c

5 0

3 years ago