A 730-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 8.25 s. What is his power output

1017.58Watts

Explanation:

A 730-N Marine in basic training climbs a 11.5-m vertical rope at a constant speed in 8.25 s. What is his power output

From the formula to calculate power; Power=workdone/time which can be expressed below;

P = W/t

But Workdone= Force× distance

Then power= (Force× distance)/time

Which can be expressed below;

Power = F×d/t

P = power output= ?

Force= 730-N

displacement= 11.5-m

time=8.25 s.

Let us calculate our workdone first as

Workdone = (730 N)(11.5 m)= 8395Nm

Since we know our workdone now, we calculate the Power as;

Power=workdone/time

Power= 8395Nm/8.25 s.

= 1017.58Nm/s

= 1017.58Joules/seconds

1017.58Watts

Therefore, his power output is

1017.58Watts.

NOTE:We can also convert to HORSE POWER , 0.00134Hp= 1watt

Then 1017.58Watts= ( 0.00134Hp× 1017.58Watt)

= 1.36horse power.

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

wavelength divides in half and speed stays the same.