A student pulls a suitcase of mass along a perfectly smooth airport floor by exerting…

PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A student pulls a suitcase of mass

10\,\text{kg}

along a perfectly smooth airport floor by exerting a constant force of magnitude

100\,\text{N}

at an angle of

30^{\circ}

above the horizontal. The suitcase starts from rest and is pulled through a horizontal distance of

20\,\text{m}

. Take

g = 9.8\,\text{m}\,\text{s}^{-2}

. (i) Calculate the work done by the student’s force on the suitcase during the

20\,\text{m}

pull. (ii) Determine the speed of the suitcase after it has moved the given distance.