The tension the student must provide in order to maintain his current workload is 40 N.
The student asked how much tension a 28-year-old male of mass 75kg must provide to maintain his current workload of 100 W at a rate of 50 rev/min and a tension of 1.5kp during a PWC170 test. The PWC170 test is a Physical Working Capacity test that measures the heart rate response at a workload of 170 beats per minute.
The tension that the student must provide in order to maintain his current workload can be calculated using the formula:
Tension = Power/Velocity
= 100 W / (2π * 0.833 m/s)
= 40 N
So, the correct option is 40 N.