To calculate the power of the lift, we first need to calculate the work done, and then divide it by the time taken.

Step 1: Calculate the work done
Work done is given by the formula: Work = Force x Distance
Here, the force is the weight of the lift and the distance is the height it travels.

Force = Weight = 4.1 kN = 4100 N (since 1 kN = 1000 N)
Distance = 150 m

So, Work = 4100 N x 150 m = 615,000 Joules

Step 2: Calculate the power
Power is given by the formula: Power = Work / Time
Here, the work is what we calculated in the previous step and the time is given as half a minute, which is 30 seconds (since 1 minute = 60 seconds).

So, Power = 615,000 Joules / 30 seconds = 20,500 Watts

Step 3: Convert power to kilowatts
1 kilowatt = 1000 watts

So, Power = 20,500 Watts = 20.5 kW

Therefore, the power of the lift is 20.5 kW.

Question

To calculate the power of the lift, we first need to calculate the work done, and then divide it by the time taken.

Step 1: Calculate the work done
Work done is given by the formula: Work = Force x Distance
Here, the force is the weight of the lift and the distance is the height it travels.

Force = Weight = 4.1 kN = 4100 N (since 1 kN = 1000 N)
Distance = 150 m

So, Work = 4100 N x 150 m = 615,000 Joules

Step 2: Calculate the power
Power is given by the formula: Power = Work / Time
Here, the work is what we calculated in the previous step and the time is given as half a minute, which is 30 seconds (since 1 minute = 60 seconds).

So, Power = 615,000 Joules / 30 seconds = 20,500 Watts

Step 3: Convert power to kilowatts
1 kilowatt = 1000 watts

So, Power = 20,500 Watts = 20.5 kW

Therefore, the power of the lift is 20.5 kW.

Knowee AI · Accepted Answer

To calculate the power of the lift, we first need to calculate the work done, and then divide it by the time taken.

Step 1: Calculate the work done
Work done is given by the formula: Work = Force x Distance
Here, the force is the weight of the lift and the distance is the height it travels.

Force = Weight = 4.1 kN = 4100 N (since 1 kN = 1000 N)
Distance = 150 m

So, Work = 4100 N x 150 m = 615,000 Joules

Step 2: Calculate the power
Power is given by the formula: Power = Work / Time
Here, the work is what we calculated in the previous step and the time is given as half a minute, which is 30 seconds (since 1 minute = 60 seconds).

So, Power = 615,000 Joules / 30 seconds = 20,500 Watts

Step 3: Convert power to kilowatts
1 kilowatt = 1000 watts

So, Power = 20,500 Watts = 20.5 kW

Therefore, the power of the lift is 20.5 kW.

An empty lift has a weight of 4.1 kN.It takes half a minute to travel 150 m.Calculate the power of the lift in kilowatts.Power = _____ kW

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