In actual practice, the coolie needs to ...

ICSE Class 10 Physics 2013 Paper

A coolie is pushing a box weighing $1500\,\mathrm{N}$ up an inclined plane $7.5\,\mathrm{m}$ long on to a platform, $2.5\,\mathrm{m}$ above the ground.

Question : 37 of 70

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In actual practice, the coolie needs to apply more effort than what is calculated. Give one reason why you think the coolie needs to apply more effort.

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