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A boy pulls his friend in a home made tr...

A boy pulls his friend in a home made trolley by means of a rope inclined at `30^@` to the horizontal. If the tension in the rope is `400N`. Find the effective force pulling the trolley along the ground.

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A boy pulls his friend in a home made trolley by means of a rope inclined at 30^@ to the horizontal. If the tension in the rope is 400N . Find the force tending to lift the trolley off the ground.

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