Speed climbing is a sport in which climbers try to scale rocks or walls as quickly as possible. In 2017, Reza Alipour set the speed climbing world record by climbing a 15m wall in 5.48 seconds. Alipour's mass is 76kg. What is the average power he needed to expend in order to achieve his world record?

In 2017, Reza Alipour set the speed climbing world record by climbing a 15 m wall in 5.48 seconds. We need to find the average power he needed to expend in order to achieve his world record.

The rate at which the work is done is called power of an object. It is given by :

[tex]P=\dfrac{W}{t}[/tex]

W is the work done, W = mgh

[tex]P=\dfrac{mgh}{t}\\\\P=\dfrac{76\ kg\times 9.8\ m/s^2\times 15\ m}{5.48\ s}\\\\P=2038.68\ W[/tex]

or

P = 1.03 kW

So, the average power of the climber is 1.03 kW. Hence, this is the required solution.

asuwafohjames asuwafohjames · Answer 2 · 2022-03-29T15:14:34+02:00

The average power he needed to expand in order to achieve his world record is 11172 W.

What is power?

Power can be defined as the rate at which work is done, or it is the rate at which energy is expanded.

To calculate the average power needed to expand in order to achieve his record, we use the formula below.

Fromula:

P = mgh/t.............. Equation 1

Where:

P = Average power
m = mass of the Alipour
h = height
g = acceleration due to gravity
t = time.

From the question,

Given:

m = 76 kg
h = 15 m
g = 9.8 m/s²
t = 5.48 seonds

Substitute these values into equation 1

P = (76×15×9.8)/5.48
P = 11172 W.

Hence, the average power he needed to expand in order to achieve his world record is 11172 W.

learn more about power here: https://brainly.com/question/24858512