A 30kN load is hoisted through a height of 70m in 5 minutes .calculate
1.the work done in one minute
30 kN * 70 m * (1 min / 5 min) = ? Joules
To calculate the work done in one minute, we need to find the total work done when hoisting the load through a height of 70m in 5 minutes, and then divide that by 5.
The formula to calculate work is:
Work = Force * Distance
Given:
Force = 30 kN (30,000 N)
Distance = 70 m
Step 1: Convert the force from kN to N:
Force = 30 kN = 30,000 N
Step 2: Calculate the total work done:
Work = Force * Distance
Work = 30,000 N * 70 m = 2,100,000 N.m = 2,100,000 Joules
Step 3: Calculate the work done in one minute:
Work done in one minute = Total work / Time
Work done in one minute = 2,100,000 Joules / 5 minutes = 420,000 Joules (or N.m)
Therefore, the work done in one minute is 420,000 Joules (or N.m).
To calculate the work done in one minute, we first need to calculate the total work done when hoisting the load through a height of 70m in 5 minutes.
Work = Force x Distance
Given:
Force = 30kN = 30,000 N
Distance = 70m
Work = 30,000 N x 70m
Work = 2,100,000 Joules
Now, we can calculate the work done in one minute by dividing the total work done by the total time taken.
Time = 5 minutes
Work done in one minute = Total work done / Total time taken
Work done in one minute = 2,100,000 Joules / 5 minutes
Work done in one minute = 420,000 Joules
Therefore, the work done in one minute is 420,000 Joules.