Your answer should be precise to 0.1 m/s. Use a gravitational acceleration of 10 m/s/s. At it lowest point, a pendulum is moving 7.7 m/s. What is its velocity in m/s after it has risen 1.0 m above the lowest point?

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Muscardinus Muscardinus · Answer 1 · 2019-08-19T12:27:30+02:00

Explanation:

It is given that,

Speed, v₁ = 7.7 m/s

We need to find the velocity after it has risen 1 meter above the lowest point. Let it is given by v₂. Using the conservation of energy as :

[tex]\dfrac{1}{2}mv_1^2=\dfrac{1}{2}mv_2^2+mgh[/tex]

[tex]v_2^2=v_1^2-2gh[/tex]

[tex]v_2^2=(7.7)^2-2\times 10\times 1[/tex]

[tex]v_2=6.26\ m/s[/tex]

So, the velocity after it has risen 1 meter above the lowest point is 6.26 m/s. Hence, this is the required solution.

samanthareynee10 samanthareynee10 · Answer 2 · 2019-11-06T21:44:06+01:00

Answer:

Explanation:

It is given that,

Speed, v₁ = 7.7 m/s

We need to find the velocity after it has risen 1 meter above the lowest point. Let it is given by v₂. Using the conservation of energy as :

So, the velocity after it has risen 1 meter above the lowest point is 6.26 m/s. Hence, this is the required solution.

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