TyroCity

# grade11

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Why is the bottom of a ship made heavy?

Why is the bottom of a ship made heavy?

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A body is moving in a circular path with constant speed. Is this motion a simple harmonic?

A body is moving in a circular path with constant speed. Is this motion a simple harmonic?

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A pendulum clock is taken to moon. Will it gain or lose time?

A pendulum clock is taken to moon. Will it gain or lose time?

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Steel balls sink in water but they don’t sink in mercury. Why?

Steel balls sink in water but they don’t sink in mercury. Why?

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A helium filled balloon rises to a certain height and then halts. Why?

A helium filled balloon rises to a certain height and then halts. Why?

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What are the drawbacks of simple pendulum?

What are the drawbacks of simple pendulum?

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Why is easier to lift a body in a liquid than in air?

Why is easier to lift a body in a liquid than in air?

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If a cork is released from the bottom of a jar filled with water, what will happen and why?

If a cork is released from the bottom of a jar filled with water, what will happen and why?

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If the earth is struck by meteorites, the earth will slow down slightly. Why?

If the earth is struck by meteorites, the earth will slow down slightly. Why?

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Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?

Suppose two forces act on rigid body and two forces have same magnitude but opposite direction. what conditions the body rotate?

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A fan with blades takes longer time to come to rest than without the blades. Why?

A fan with blades takes longer time to come to rest than without the blades. Why?

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Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

Why a wrench of longer arm is preferred in comparison to a wrench of short arm?

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What is the counterpart of the mass and force in rotational motion?

What is the counterpart of the mass and force in rotational motion?

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A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?

A dancer girl is rotating over a turntable with her arms outstretched. If she lowers her arms how does this affect her motion?

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Why bridges are declared unsafe after a long use?

Why bridges are declared unsafe after a long use?

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