Question

Vans Kull is pulling on a rope to drag his backpack to school across the ice. He pulls upwards and rightwards with a force of 12.7 Newtons at an angle of 55 degrees above the horizontal to drag his backpack a horizontal distance of 209 meters to the right. Determine the work (in Joules) done upon the backpack.

Answer 1

$W=Fs\cos55°=12.7\cdot209\cdot\cos55°=1522\ (J)$ . Answer