![]() Well, then, the force applied is equal to the spring constant multiplied by the extension of the spring which is □ - in other words, how much longer the spring is relative to its natural length. So let’s say the natural length of the spring is this distance here. Now, one example of a quantity which has the unit newtons per meter is the spring constant of a string because remember the force applied to a spring which we’ll call □ is equal to the spring constant of the spring □ multiplied by the extension of the spring. So number two is not the answer we’re looking for either. However, neither torque nor work down is the same as pressure. So as we said earlier, depending on the context, newton meters could be a unit of either torque or work done. And this torque would be □, the torque, is equal to the force multiplied by the perpendicular distance □ between the point at which the force is applied, which is here, and the point at which the plank rotates, which is here.Īnd once again, torque has a unit of newtons multiplied by meters. So newton meters could be a unit of work done or if we had a situation, where we had something that could rotate, let’s say a plank and we applied to force □ at distance □ away from the point at which this plank would rotate, then we would be applying a torque to this plank. And this work done will have units of newtons multiplied by meters because force has unit of newtons and distance has unit of meters. Depending on the context of the situation that quantities could either be, the work done on an object when we apply a force □ to the object and it moves a distance □, in which case, the work done □ is defined as the force applied multiplied by the distance moved. Now, the newton meter can be a unit for a couple of different kinds of quantities. And we can recall that meter is a unit of distance. Well, we’ve already said that newton is a unit of force from number one. ![]() Let’s look at number two then - newton meter. So number one is not the answer that we’re looking for. Well, the newton is a unit of force, not pressure. ![]() Let’s start with number one - the newton. So let’s go through them one by one and discuss what each of these units are for. ![]() Okay, so in this question, we’re trying to find the correct unit for pressure. Which of the following is the correct unit for pressure? 1) newton, 2) newton meter, 3) newtons per meter, 4) joule, 5) pascal. ![]()
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