Question

ANGLES
119
A
ABCD is a quadrilateral in which AD = BC and
DAB = Z CBA (see Fig. 7.17). Prove that
(i) A ABD=ABAC
(ii) BD=AC
(iii) ZABD= ZBAC.
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Answer 1

Answer:

According to the law of gravitation, the force of attraction acting between two bodies is given by, Thus, when the distance between the objects is reduced to half the gravitational force increases by four times the original force.