Question

a. Take two aluminium channels of
different lengths.b. Place the lower ends
of the channels on the floor and hold
their upper ends at the same height.c.
Now take two balls of the same size and
weight and release them from the top
end of the channels. They will roll down
and cover the same distance.
1) Which law related to energy does the
above activity demonstrate? *

2)What is the form of the eventual total
energy of the balls? *​

Answer 1

Explanation:

1. law of conservation of energy

→ because total energy of system is conserved

2. total energy= kinetic energy+potential energy

→. sum of KE and PE at every point of process is same

(at top , PE is max. and KE is 0

at bottom, KE is max. and PE is 0)

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