Physics

Problem

A crane pulls a stuck vehicle with a cable exerting a steady force of

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

. The vehicle moves

30\,\text{m}

along level ground, and the cable does

3.0\times10^{4}\,\text{J}

of work on the vehicle. (i) Calculate the value of

\cos\theta

, where

\theta

is the angle between the cable and the direction of motion. (ii) Hence, determine

\theta

(nearest whole degree). a. (i)

\cos\theta=

b. (ii)

\theta=