Mechanical work is performed .. a) if a force acts on the body and it moves

| July 4, 2021 | education

1 – Mechanical work is performed .. a) if a force acts on the body and it moves b) if the force of gravity is equal to the weight of the body. c) whenever the body is moving. 2-Mechanical work is calculated by the formula: a) A = Fs b) P = gm c) P = F / S 3-Power is: a) the ratio of work to the time during which it was completed b) work performed by the body c) the strength with which the work is done. 4-For unitu, for power in SI it is accepted: a) watt (W) b) joule (J) c) newton (N) 5-The shoulder of force is: a) the shortest distance between the fulcrum and the line of action of the force. b) the distance to the point of application of the force. 6-Equilibrium condition of the lever: a) F1 / F2 = l2 / l1 b) F1 / l1 = F2 / l2 c) F = gm 7-The moment of force is calculated by the formula: a) M = Fl b) M = Fs c) M = F / S 8-efficiency is: a) the ratio of useful work to complete work b) Equality of useful work with complete work c) when the complete work is less useful.

1 – Mechanical work is performed: a) if a force acts on the body and it moves.
2 – Mechanical work is calculated by the formula: a) A = F * s.
3 – Power is: a) the ratio of work to the time during which it was completed.
4 – The unit of power in SI is: a) watt (W).
5 – The shoulder of force is: a) the shortest distance between the fulcrum and the line of action of the force.
6 – Condition of equilibrium of the lever: a) F1 / F2 = l2 / l1.
7 – The moment of force is calculated by the formula: a) M = F * l.
8 – efficiency is: a) the ratio of useful work to complete.



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