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  1. Asked: In:

    The wheels of vehicles are provided with mudguards. Why?

    Mahati

    When the wheel rotates at a high speed, the mud sticking to the wheel flies off tangentially, this is due to inertia of direction. If order that the flying mud does not spiral the clothes of passer by the wheels are provided with mudguards .

    When the wheel rotates at a high speed, the mud sticking to the wheel flies off tangentially, this is due to inertia of direction. If order that the flying mud does not spiral the clothes of passer by the wheels are provided with mudguards .

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  2. Asked: In:

    Action and reaction forces do not balance each other. Why?

    Mahati

    As they acts on different bodies.

    As they acts on different bodies.

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  3. Asked: In:

    An athlete runs a certain distance before taking a long jump. Why?

    Mahati

    So that inertia of motion may help him in his muscular efforts to take a longer jump.

    So that inertia of motion may help him in his muscular efforts to take a longer jump.

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  4. Asked: In:

    Bodies of larger mass need greater initial effort to put them in motion. Why?

    Mahati

    As F = ma so for given a, more force will be required to put a large mass in motion.

    As F = ma so for given a, more force will be required to put a large mass in motion.

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  6. Asked: In:

    A body is acted upon by a number of external forces. Can it remain at rest?

    Mahati

    Yes, if the external forces acting on the body can be represented in magnitude and direction by the sides of a closed polygon taken in the same order.

    Yes, if the external forces acting on the body can be represented in magnitude and direction by the sides of a closed polygon taken in the same order.

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