As shown in the diagram, a vertical pole and horizontal arm move in uniform circular motion about the axis of the pole. a ball of mass 5.0 kg is suspended by two wires from the horizontal arm. the linear speed of the ball equals 2.1 m/s. what is the tension in wire 2?

45 n

28 n

51 n

34 n

40 n

Answer is 34 N. Because of uniform circular motion you can set the centripetal force equal to the component of the tension force that points toward the center of rotation. Now simply solve for T2. Picture below

the answer is 3.1 his answer is wrong mines is right

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