The free body diagram of the rock comprises the tension on the rope acting upwards and the weight of the rock acting downwards.
The tension on the supporting rope is 735 N.
The given parameters;
- mass of the rock, m = 75 kg
(a) The free body diagram of the rock is presented as follows;
↑ T
Ο
↓ W
Where;
T is the tension on the supporting rope
W is the weight of the rock
(b) The tension on the rope is calculated as follows;
T = W
T = mg
T = 75 x 9.8
T = 735 N
Thus, the free body diagram of the rock comprises the tension on the rope acting upwards and the weight of the rock acting downwards. The tension on the supporting rope is 735 N.
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