Photo AI
A load of mass 75 kg is initially at rest on the ground - NSC Physical Sciences - Question 5 - 2018 - Paper 1
Question 5
A load of mass 75 kg is initially at rest on the ground. It is then pulled vertically upwards at a constant acceleration of 0,65 m·s² by means of a light inextensibl... show full transcript
Worked Solution & Example Answer:A load of mass 75 kg is initially at rest on the ground - NSC Physical Sciences - Question 5 - 2018 - Paper 1
Step 1
5.1 Draw a labelled free-body diagram for the load while it moves upward.
Answer
To draw a labeled free-body diagram for the load, start with a box representing the load of mass 75 kg. From the center of the box, draw two arrows:
-
Weight (W): Draw an arrow pointing downward, labeled with 'W' representing the gravitational force acting on the load. The magnitude of W can be calculated using the formula:
where m = 75 kg and g = 9.8 m/s². Therefore, W = 75 kg × 9.8 m/s² = 735 N.
-
Tension (T): Draw an arrow pointing upward from the top of the box, labeled with 'T', representing the tension in the rope pulling the load upward.
Make sure both arrows are clearly labeled, and indicate that T is greater than W since the load is accelerating upward.