Question

You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 25 kg. The rope is at an angle of 38 degrees to the ground. As you pull with a force of 29 N, the sled travels a distance of 52 m with a force of 30 N how much work do you do?

Answer 1

Answer

Work done will be equal to 1229.296 J

Explanation:

We have given mass of the sister m = 25 kg

Angle between rope and ground $\Theta =38^{\circ}$

Force F = 30 N  

So horizontal force $=Fcos\Theta =30\times cos38^{\circ}=23.64N$

Distance traveled d = 52 m

'We have to find the wok done

Work done is equal to multiplication of horizontal force and distance

So work done $W=23.64\times 52=1229.296J$