The torque required to turn the crank on an ice cream maker is 4.50 Nm. How much work does it take to turn the crank through 300 full turns? A) 4240 J
B) 8480 J
C) 2120 J
D) 1350 J
E) 2700 J

B) 8480 J

Explanation:

From the question,

The work required to turn the Crank in on turn is

W = 2πT Equation 1

Where W = work, T = torque.

Given: T = 4.50 Nm, π = 3.14

Substitute into equation 1

W = 4.5(2)(3.14)

W = 28.26 J per turn.

For 300 full tern,

W = 28.26×300

W = 8476 J

Hence,

W≈ 8480 J.

The right answer is B) 8480 J

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

close lines strong magnet less close weaker