DISCUSSION1) WHEN THE FORCES ACTING ON AN OBJECT ARE IN EQUILIBRIUM, THE RESULTANT FORCE ACTING ON OBJECT IS EQUAL TO ZERO. (The sum of all horizontal and vertical components of the forces is equal to zero). From the experiment Force B and Force A which was recorded in a spring balance is different in forces but the Spring balance C which was lifting the weight was in equilibrium. This is because the resultant force acting on Spring balance A and Spring balance B is zero.

2) The force depends on the length of the string. When the length of the string is longer the force produced is also higher.among the three position The third position has the highest force whereas the first position has the lowest force. This is due to the short length of string in first position compared to the third position. The mechanical properties of a substance will react to load and stress.if a substance mechanical properties are identical in all directions, it is isotropic.

ConclusionAs I conclude, when the length of the string from knot to Spring Balance C being longer, then the forces of FaSin@ and FbSin@ is increases. Thus, the system achieve the equilibrium state.

Discussion As calculated the work of a system in a different load, the data obtained of the work is getting increases and this is due to the increase of load with influence of gravity (9.81m/s2). The time taken for the load to reach the ground is getting shorter when the load is increases. The time taken to reach the ground is shorter and the velocity capture is increases. The kinetic energy also increases as it was influence by the velocity.

ConclusionAs I conclude from the experiment, the work of the object increases as the load increases (angle was kept constant). Besides that, the kinetic energy increases, as the velocity increases. Thus, velocity is directly proportional to kinetic energy.