Question

The bob of a simple pendulum of length 1 m has mass 100g and a speed of 1.4 m/s at the lowest point in its path. Find the tension in the string at this moment. Take g=9.8m/sec2​

Answer 1

Answer:

answer is 1.2 ok

Explanation:

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Answer 2

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$\huge\red{\underline{{\bf Question : }}}$

• The bob of a simple pendulum of length 1m has mass 100g and a speed of 1.4m/s at the lowest point in its path. Find the tension in the string at this moment.

$\huge\red{\underline{{\bf Answer : }}}$

$\large\bf{\underline\blue{Given:-}}$

• The bob of a simple pendulum of length 1 m has mass 100g.

• A speed of 1.4 m/s at the lowest point in its path.

$\large\bf{\underline\green{To \: Find:-}}$

• The tension in the string at this moment.

$\large\bf{\underline\orange{Solution:-}}$

• The length of the simple pendulum is r = 1 m

• The mass of the bob is m = 0.1 kg

• The speed of the bob at the lowest point is v = 1.4 m/s

• At the lowest point, the weight of the bob and the centripetal force combines to gives the tension developed in the string.

$\sf\pink{⟹ T = Mg + \frac{ {Mv}^{2} }{r} }$

$\sf\pink{⟹T =(0.1 \times 9.8) + ( \frac{0.1 \times {1.4}^{2}}{1}) }$

$\sf\pink{⟹T =1.176N}$

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