John dragged a wooden block across a table with 4 different surfaces and the resultsof the experiment are shown in the table below. type of surface average force needed (n)a 105b 88c 127d 94(a) arrange in order, starting from thesmoothest surface to the roughestsurface. in another experiment, john gluedsurface a from the first experimentonto a ramp and pulled the samewooden block up the ramp. (b) will the force needed to pull the wooden block up the ramp be more than, less than orthe same as 105n? explain your answer.

If the surface is rough then the average force needed to move the wooden block will be more as the friction between the surfaces will be more.

Hence, the least force will be required on the smoothest surface and the greatest force will be required for the roughest surface.

a) Hence, the order will be: B > D > A > C

b) When the surface is glued then the force of friction will increase. Hence, it will require more force to move the wooden block on the surface. Hence, the more required will be more than 105 N.

v=ir = 3x15 =45 v

answer///isobars;