ICSE Class 10 Physics 2020 Solved Paper

SECTION - II

The figure below shows a simple pendulum of mass 200g. It is displaced from the mean position A to the extreme position B. The potential energy at the position A is zero. At the position B the pendulum bob is raised by 5m.

Question : 27

Total: 67

What is the potential energy of the pendulum at the position B ?

Solution:

At the position B,
U‌=mgh
‌=‌

200

1000

×10×5 (∵m=200g=‌

200

1000

‌kg)
‌=10J

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