1. If a mass of 500kg is lifted through a height of 2m, calculate the amount of work done.
15 Basic mechanics (2365) (A)

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Construction
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Vocational training
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Hard
Paul Ward
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20 questions
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1.
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1 min • 1 pt
Answer explanation
Work done=Force×Distance
Force=Mass×Acceleration
∴ Work done=Mass×Acceleration×Distance
Work done= 500×9.81×2
9810 Nm or 9810 Joules
2.
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1 min • 1 pt
2.A mass of 300kg is raised through a vertical height of 8m. Calculate the amount of work done.
Answer explanation
Work done=Force×Distance
Force=Mass×Acceleration
∴ Work done=Mass×Acceleration×Distance
Work done= 300×9.81×8
23544 Nm or 23544 Joules
3.
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1 min • 1 pt
3.Calculate the work done when a force of 750N moves an object through a horizontal distance of 15m.
Answer explanation
Work done = Force×Distance
Work done = 750×15
11250 Nm or 11250 Joules
4.
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1 min • 1 pt
4.Calculate the work done when a force of 350N moves an object through a horizontal distance of 3.5m.
Answer explanation
Work done = Force×Distance
Work done = 350×3.5
1225 Nm or 1225 Joules
5.
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1 min • 1 pt
5. If the amount of work done by a force of 100N is 800Nm, calculate the distance the object has moved.
6.
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1 min • 1 pt
6.Calculate the distance covered by a trolley of 51N weight when the amount of work done is 1,020Nm.
7.
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1 min • 1 pt
7.Calculate the opposition force of a transformer that moves 40m when the work done is 14,000Nm.
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