Let P&R work for n hours and completes this part P,Q and R work in next 2 hrs and completes 2 * 1/4 = 1/2 of the question In the first two hours, 2* 1/20 = 1/10 of the question is completed by Q The work formula is articulated as WF.d WF.d.cos Where, F is the force applied d is the displacement is the angle between force and direction of motion Work formula is made use of to compute work done, force, or displacement in any problem. In 1 hr, P, Q and R can complete 1/4 of the question Work done by an electric force by transfering a charge in an electric field is equal to the difference of potential energies between the starting position A and the final position B. So for example, though the suns influence. In 1 hr, P and R can complete 1/5 of the question Both result in the formula work force x distance moved x cos(angle between line of force and line of action). In 1 hr, Q can complete 1/20 of the question.
When the gas expands against an external pressure. One way to remember the sign convention is to always think about the change in energy from the point of view of the gas. When work is done on the gas, the volume of the gas decreases () and work is positive. In 1 hr,P,Q and R can complete 1/4th of the question When the gas does work the volume of a gas increases () and the work done is negative. The work done on a body by a force is dependent on the force that acts on the body and the distance that the body moves in the direction of that force according to the formula (), c o s where is the magnitude of the force, is the magnitude of displacement of the body while the force acts on it, and is the angle. When the gas does work the volume of a gas increases () and the work done is negative. In 1 hr, P&R can complete 1/(x-15) of the question Definition: Work Done on a Body by a Force. Example 1: A car with mass m400 kg is at rest and then is increasing its velocity linearly. In 1 hr, Q can complete 1/x of the question, Below five examples are presented using the work done integral formula in different physical problems.
Then P&R together needs (x-15) hours to solve the problem Let Q alone can answer the problem in x hours
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