Using free body diagram show that it is easy to pull an object than to

1.	Using free body diagram show that it is easy to pull an object than to push it
Answer» <P> Solution :Whena bodyis pushedat anarbitraryangle `theta` thatvariesfrom `(p " to"(pi )/(2))` . TheappliedforceF canberesolvedintotwocomponentsas Fsin `theta` parallelto the surfaceand F cos `theta` prependicularto the SURFACE. Thetotaldownwardforceactingon thebodymg +F cos `theta` . Itis impliedthat thenormalforceactingon thebodyincrease. sincethereis noaccelerationalongthe verticaldirectionthe normalforce N is given by As a resultthe maximalstaticfrictionalsoincreasesand thatis EQUAL to `f_(s) ^(MAX)= mu_(s)N_(push)` `-mu_(s ) (mg + F cos theta)` Equationshows thata greaterforceneedstobe appliedto pushthe objectintomotion Whenan OBJECTIS pulledat anangle `theta` the aplliedforceisresolvedinto twocomponents. The totaldownwardforceacting on theobject is Equation (3)showsthat thenormal forceis less that `N_(push)`Fromequation `(1) ` and (3)weknowthat itis easier to pullan objectthattopushto makeit move.

Using free body diagram show that it is easy to pull an object than to push it