20 A 19 kg box of math books is carried up a set of stairs

Last updated: 4/25/2023

20 A 19 kg box of math books is carried up a set of stairs that is 8 m long and inclined at 50 How much work is done against gravity 21 A rock climber pulls himself 21 m up the side of a cliff with a force of 5 2 N at an angle of 11 2 to the vertical What is the work done 22 A storage box is dragged 7 m along a smooth level floor by a 43 N force applied at 38 to the floor Then it is pulled 3 5 m up a ramp inclined at 24 to the horizontal using the same force The storage box is then dragged a further 6 m along a level platform using the same force again Determine the total work done in moving the storage box