ICSE Class 10 Physics 2020 Solved Paper

SECTION - II

The figure below shows a simple pendulum of mass $200 {\g}$ . 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 $5 {\m}$ .

Question : 28 of 67

Marks: +1, -0

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)

\;=10 {\J} .

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