A block moves up a 30° incline under the action of certain forces, three of which are shown at the right. F1 is horizontal and of magnitude 40 N. F2 is normal to the plane and of magnitude 20 N. F3 is parallel to the plane and magnitude 30 N. (a) Determine the work done by each force as the block (and point of application of each force) moves 80 cm up the incline. (b) What is the work done by the gravity? (c) Find the total work done on the block excluding the work of frictional force
2 answers
Not knowing if F3 is up the plane or down, it is hard to say. I suppos F1 is pushing up, but again it is unclear.
A block moves up a 30° incline under the action of certain forces, three of which
are shown at the right. F₁ is horizontal and of magnitude 40 N. F₂ is normal to the
plane and of magnitude 20 N. F3 is parallel to the plane and magnitude
30 N. (a) Determine the work done by each force as the block (and point of
application of each force) moves 80 cm up the incline. (b) What is the work done by
the gravity? (c) Find the total work done on the block excluding the work of frictional
force.
are shown at the right. F₁ is horizontal and of magnitude 40 N. F₂ is normal to the
plane and of magnitude 20 N. F3 is parallel to the plane and magnitude
30 N. (a) Determine the work done by each force as the block (and point of
application of each force) moves 80 cm up the incline. (b) What is the work done by
the gravity? (c) Find the total work done on the block excluding the work of frictional
force.
2 answers