Question

17.
corona
A spring block system is placed on a rough horizontal floor. The block is pulled towards right to give spring
some elongation and released.
(A) The block may stop before the spring attains its natural length
(B) The block must stop with spring having some compression.
(C) The block may stop with spring having some compression.
(D) It is not possible that the block stops at natural length of the spring.
In the above situation the block will have maximum velocity when
(A) the spring force becomes zero
(B) the frictional force becomes zero
(C) the net force becomes zero
(D) the acceleration of block becomes zero
18.
m
mes Zero
1​

Answer 1

Answer:

Answer of first part -C and of second part is -A

Explanation:

i hope my answer is o