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 : 28

Total: 67

What is the total mechanical energy at point C ?

Solution:

Total mechanical energy at point C = Total mechanical energy of point B
=U+K
‌=10+0 (K=0,∵V=0)
‌=10J.

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