The bob of simple pendulum is held in the horizantal position calculate the speed of the bob of pendulum at the lowest position B when released and the length of pendulum is 0.5 meter and assume that there is no loss of energy

The bob of simple pendulum is held in the horizantal position calculat

1.	The bob of simple pendulum is held in the horizantal position calculate the speed of the bob of pendulum at the lowest position B when released and the length of pendulum is 0.5 meter and assume that there is no loss of energy
Answer» Increase in potential Energy of BOB =mgΔh where m is mass of bob, g=9.81 ms−2 is acceleration due to gravity and Δh is change in height of bob.As shown in the FIGURE, Δh=L−Lcosθ . INSERTING given VALUES we getWork DONE on the bob =0.5×9.81(20−20 cos30∘) ⇒ Work done on the bob =0.5×9.81×20(1−√32)=13.1 J

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The bob of simple pendulum is held in the horizantal position calculate the speed of the bob of pendulum at the lowest position B when released and the length of pendulum is 0.5 meter and assume that there is no loss of energy ​

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The bob of simple pendulum is held in the horizantal position calculate the speed of the bob of pendulum at the lowest position B when released and the length of pendulum is 0.5 meter and assume that there is no loss of energy