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Evgesh-ka [11]
3 years ago
15

Determine the amount of work done when a crane lifts a 100-N block form 2m above the ground to 6m above the ground

Physics
1 answer:
Dima020 [189]3 years ago
4 0

Data given:

F=100N

Δx=6m-2m=4m

A=?

Formula needed:

A=F×s

Solution:

A=100N×4m

A=400J

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An 1800 kg helicopter rises with an upward acceleration of 2.0 m/s?. What lifting force is supplied by its rotating blades?
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Answer:

Lifting force, F = 21240 N

Explanation:

It is given that,

Mass of the helicopter, m = 1800 kg

It rises with an upward acceleration of 2 m/s². We need to find the lifting force  supplied by its rotating blades. It is given by :

F = mg + ma

Where

mg is its weight

and "ma" is an additional acceleration when it is moving upwards.

So, F=1800\ kg(9.8\ m/s^2+2\ m/s^2)

F = 21240 N

So, the lifting force supplied by its rotating blades is 21240 N. Hence, this is the required solution.

4 0
3 years ago
When light passes through an object unchanged, scientists call that process _____.
Nataly [62]

<u>Answer</u>:

When light passes through an object unchanged, scientists call that process Transmission.

<u>Explanation</u>:

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5 0
3 years ago
A SI unit used to measure force, equal to less than one-quarter of a pound, is the what
bulgar [2K]

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1 newton is the force that accelerates a 1 kilogram mass
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1 pound of force is equivalent to roughly  4.448 newtons.

(1 newton is equivalent to roughly  0.225  pounds of force.)

4 0
3 years ago
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alexandr402 [8]

Answer:

x = 45 MPH

Explanation:

given,

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now,

average of entire ride is given as 60 mph so,

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hence, the average speed of the second half comes out to be 45 MPH.

5 0
3 years ago
What type of energy does friction produce?
VMariaS [17]

Answer:

The correct option is A = adiant negy.

6 0
3 years ago
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