Question

Rahul is carrying a load of 80 kg on a distance of 200 metres. In 5 mins. Same load carried by Trina in 4 minutes. Who has more power.

Answer 1

Hello!

Trina is stronger

Rahul takes 5 minutes:

5/2 = 2.5

=> Rahul takes 2.5 minutes to travel 100m with 80kg

• Reena take 4 minutes:

4/2 = 2

=> Reena takes 2 minutes to travel 100m with 80kg

Trina is stronger because she went 30 seconds before Rahul.

Answer 2

Power is defined as the amount of work done per unit time. Work is defined as the force applied on an object multiplied by the distance moved by the object in the direction of the force. Therefore, power is equal to work divided by time.

Rahul carried a load of 80 kg on a distance of 200 meters in 5 minutes. The work done by Rahul is equal to the force applied (80 kg) multiplied by the distance moved (200 meters), which is equal to 16,000 Joules. Therefore, Rahul's power is equal to 16,000 Joules divided by 300 seconds (5 minutes), which is equal to 53.3 watts.

Trina carried the same load of 80 kg in 4 minutes. The work done by Trina is also equal to the force applied (80 kg) multiplied by the distance moved (200 meters), which is equal to 16,000 Joules. Therefore, Trina's power is equal to 16,000 Joules divided by 240 seconds (4 minutes), which is equal to 66.7 watts.

Therefore, Trina has more power than Rahul, as she was able to do the same amount of work in less time.