A man carries a load on his head through a distance of 5 m. The maximum amount of work is done when he

Movies it over an inclined plane

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Movies it over a horizontal surface

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Lift it vertically upwards

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All of the above

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Solution

The correct option is C Lift it vertically upwards
The maximum work done by man will be when he lift it vertically upwards because in such situation the man has to exert force opposite to gravity that is in the direction of the displacement of load.

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A man carries a load on his head through a distance of 5 m. The maximum amount of work is done when he

The correct option is C Lift it vertically upwardsThe maximum work done by man will be when he lift it vertically upwards because in such situation the man has to exert force opposite to gravity that is in the direction of the displacement of load.

The correct option is C Lift it vertically upwards
The maximum work done by man will be when he lift it vertically upwards because in such situation the man has to exert force opposite to gravity that is in the direction of the displacement of load.