An object is under the influence of a force as represented by the force vs. position graph as shown in Figure What is the work done as it moves from 0 to 10 m?

Work done = force x distance.

The force is 10N the distance is 10m

Work done = 10 N x 10m = 100 NM = 100 Joules

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

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