Will a pendulum clock gain or lose time when taken to the top of a mountain?
The bob of a simple pendulum is made of wood. What will be the effect on the time period if the wooden bob is replaced by an identical bob of aluminum?
The bob of a simple pendulum is a hollow sphere filled with water. How will the period of oscillation change, if the water begins to drain out of the hollow sphere?
A girl is swinging seated in a swing. What is the effect on the frequency of oscillation if she stands?
If the polar ice caps of the earth were to melt, what would the effect of the length of the day be?
Why are spokes provided in a bicycle wheel?
Give an example where the velocity of an object is zero but its acceleration is not zero.
Hydrogen is in abundance around the sun but not around earth. Why?
Can there be electric potential at a point with zero electric intensity? Give an example.
Why does the car with a flattened tyre stop sooner than the one with inflated tires?
why is the electric field always at right angles to the equipotential surface? Explain.
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