Physics

Problem

An engineer must slide a heavy crate by applying a force at

30^{\circ}

to the horizontal. If

2.4\,\text{kJ}

of work is required to move the crate

40\,\text{cm}

, what is the magnitude of the force needed? a) approximately

5.2\times10^{3}\,\text{N}

b) approximately

6.9\times10^{3}\,\text{N}

c) approximately

1.2\times10^{4}\,\text{N}

d) approximately

3.0\times10^{3}\,\text{N}