Can someone help me with b, d and e? Please need this today

Explanation:

a) the free body diagram of the lower pulley would have two force vectors of equal magnitude acting upward and the block weight acting downward. These must balance so 2F = Wt

                                          F = 262/2 = 131 N

b) as the force needed is half of the block weight, the mechanical advantage is 262 / 131 = 2

c) with a mechanical advantage of 2, he would have to pull twice the distance of block motion or 2(3.00) = 6.00 m

d) W = Fd = 131 N(6.00 m) = 786 J

which is the same as the increase in potential energy of the block

e) W = mgh = 262(3.00) = 786 J

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2