a) Find F:
F = mg/(sin30 - mu cos30)
Work = F sin30 (2.3)
b) mg (2.3)
c) normal force can never do work
d) mgh (same as b)
A 5.3-kg block is pushed 2.3 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of θ = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following.
(a) the work done by F
J
(b) the work done by the force of gravity
J
(c) the work done by the normal force between block and wall
J
(d) By how much does the gravitational potential energy increase during the block's motion?
J
3 answers
im getting wrong answer for 1) i got 216.2 J but that is incorrect
2) im also getting wrong when i plug in everything.
3) is 0
4) is 119.50
so can u please look at 1 and 2 and help me
2) im also getting wrong when i plug in everything.
3) is 0
4) is 119.50
so can u please look at 1 and 2 and help me
I Response Any Thing what You Do
2 answers