What force does the nail puller in Exercise 9.19 exert on the supporting surface? The nail puller has a mass of 2.10 kg. Exercise 9.19: What is the mechanical advantage of a nail puller—similar to the one shown in Figure 9.23 —where you exert a force 45 cm from the pivot and the nail is 1.8 cm on the other side? What minimum force must you exert to apply a force of 1250 N to the nail?

Solution 23PE Step-by-step solution Step 1 of 2 The force that nail puller exert on the supporting surfac e is , Torque about pivot point is zero that is, Therefore,