A steel nail has a large flat circular head at one end and a sharp point at the other end. The nail is driven vertically into a block of wood. Let FheadF_{\text{head}}Fhead and PheadP_{\text{head}}Phead be the force and pressure exerted on the flat head, and let FpointF_{\text{point}}Fpoint and PpointP_{\text{point}}Ppoint be the force and pressure exerted by the sharp point on the wood.
Which of the following correctly compares the force and pressure at the sharp point to those at the flat head?
Fpoint>FheadF_{\text{point}} > F_{\text{head}}Fpoint>Fhead and Ppoint>PheadP_{\text{point}} > P_{\text{head}}Ppoint>Phead
Fpoint=FheadF_{\text{point}} = F_{\text{head}}Fpoint=Fhead and Ppoint>PheadP_{\text{point}} > P_{\text{head}}Ppoint>Phead
Fpoint=FheadF_{\text{point}} = F_{\text{head}}Fpoint=Fhead and Ppoint<PheadP_{\text{point}} < P_{\text{head}}Ppoint<Phead
Fpoint<FheadF_{\text{point}} < F_{\text{head}}Fpoint<Fhead and Ppoint>PheadP_{\text{point}} > P_{\text{head}}Ppoint>Phead
188 exam-style questions on CIE IGCSE Physics Pressure, covering Pressure. Each one has a worked solution and a mark scheme showing where the marks go.