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Viktor [21]
3 years ago
12

There is a pulley arrangement with a worker standing on a raised platform. The worker is standing on a platform 4 m above the fl

oor. How many meters of rope must he pull through his hands to raise the block from the floor to his position?
Physics
1 answer:
vova2212 [387]3 years ago
7 0

Answer:

I am kind of confused-

Explanation:

Do you mind re-writing and explaining the question more?

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An artificial satellite is moving in a circular orbit of radius 24,600 km. Calculate its speed if it takes 12hours to revolve ar
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Answer:

the speed of the satellite is 12,880.53 km/h

Explanation:

Given;

radius of the circular orbit, r = 24,600 km

time taken to revolve around Earth, t = 12 hours

The circumference of the satellite is calculated as;

L = 2πr

L = 2π x 24,600 km

L = 49,200π km

L = 154,566.36 km

The speed of the satellite;

v = L/t

v = 154,566.36 / 12

v = 12,880.53 km/h

Therefore, the speed of the satellite is 12,880.53 km/h

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Explanation:

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