A constant force of 20 lb 'is applied at an angle of 47" to pull a handcart 34 ft across the ground. What is the work done by this force (to 2 decimal places)? 20 H; AZSOD-lb truck sits on a ramp inclined at 11 . Find the (approx.) magnitude of the force required to keep the truck from rolling down the ramp. / .' 2.500 I!) q ||F"H=[