Calculate the total amount of work performed in 5 minutes of exercise on a cycle ergometer,given the following: Resistance on flywheel = 30 Newtons
Cranking speed = 50 revolutions per minute
Distance traveled per revolution = 6 meters
1 joule = 1 newton-meter
A)9,000 joules
B)4500 joules
C)45,000 joules
D)Total work performed cannot be calculated given the information above.

Question

Quizplus · Accepted Answer

To calculate the total work performed in 5 minutes of exercise on a cycle ergometer, we need to use the formula:
Work = Force x Distance
First, let's calculate the distance traveled in 1 minute:
Distance traveled in 1 revolution = 6 meters
Number of revolutions in 1 minute = 50
Total distance traveled in 1 minute = 6 x 50 = 300 meters
Next, let's calculate the force exerted on the pedals:
Force exerted on the pedals = 30 Newtons
Now we can calculate the work done in 1 minute:
Work done in 1 minute = Force x Distance = 30 x 300 = 9,000 joules
Finally, to calculate the total work done in 5 minutes, we just need to multiply this value by 5:
Total work done in 5 minutes = 9,000 x 5 = 45,000 joules
Therefore, the correct answer is C) 45,000 joules.

Calculate the Total Amount of Work Performed in 5 Minutes