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mash [69]
2 years ago
8

You use a rope 2.00 m long to swing a 10 kg weight around your head. The tension in the rope is 20 N. In half a revolution how m

uch work in J is done by the rope on the weight
Physics
1 answer:
satela [25.4K]2 years ago
8 0

Answer:

No work is done on the weight. :3

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patriot [66]

Answer:

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Explanation:

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3 years ago
A ball is dropped from a rooftop 60m high. <br> How long is the ball in the air?
alina1380 [7]

Answer: 3.49 s

Explanation:

We can solve this problem with the following equation of motion:

y=y_{o}+V_{o}t-\frac{1}{2}gt^{2} (1)

Where:

y=0 m is the final height of the ball

y_{o}=60 m is the initial height of the ball

V_{o}=0 m/s is the initial velocity (the ball was dropped)

g=9.8 m/s^{2} is the acceleratio due gravity

t is the time

Isolating t:

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Finally we find the time the ball is in the air:

t=3.49 s (4)

7 0
3 years ago
Can someone please help me with this one
Brilliant_brown [7]

Answer:

in left

Explanation:

Hope it will help

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5 0
2 years ago
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Softa [21]

Answer:

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Explanation:

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8 0
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2 years ago
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