What minimum coefficient of static friction is required for all four objects to roll without slipping

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

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

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y