Question
The elevator shown in fig. is descending with an acceleration of $$2\,m/{s^2}.$$ The mass of the block $$A = 0.5\,kg.$$ The force exerted by the block $$A$$ on block $$B$$ is
The elevator shown in fig. is descending with an acceleration of $$2\,m/{s^2}.$$ The mass of the block $$A = 0.5\,kg.$$ The force exerted by the block $$A$$ on block $$B$$ is
A.
$$2\,N$$
B.
$$4\,N$$
C.
$$6\,N$$
D.
$$8\,N$$
Answer :
$$4\,N$$
Solution :
$$R = mg - ma = 0.5 \times 10 - 0.5 \times 2 = 5 - 1 = 4\,N$$
$$R = mg - ma = 0.5 \times 10 - 0.5 \times 2 = 5 - 1 = 4\,N$$
