Question

`Q7In which condition the more fore needs to apply and why. a.Cutting vegetables with a sharp kiner for toothed knifie. b.Grater with small holes or big holes for grating carrots. c.Porter carries load without a round piece of cloth and the porter carries load using the round piece of cloth on head. d.Shoulder bags with narrow straps or the shoulder bags with broad straps. e.To fix the pointed nail in a wooden block or nail with the broad end.​

Answer 1

Answer:

Toothed knife,Larger holes,With Cloth,Narrow straps,Broad end

Explanation:

pressure is inversely proportional to area

P=F/A,Force/Area

P directly proportional to force,Inversely proportional to area

A. sharp knife (A is less,P is more,F needed is less to cut),Toothed (A is more,P is less,F needed is  more)

B.Small holes(A is less,P is more,F needed is less),Larger holes(A is more,P is less,F needed is more)

C.Without cloth(A is less,P is more,cant walk with ease as effect of F is more per unit area) With cloth(A is more,P is less,able to carry easily as effect of F is less per unit area)

D.Narrow straps(A is less,P is more,cant walk with ease as F is more),Broad straps(A is more,P is less,able to carry easily as F is less)

E.Pointed nail(A is less,P is more,F needed is less),Broad end(A is more,P is less,F is less, hence F needed is more to drill)