The following sets of three vectors act on a body, whose resultant can not be zero:
(1) 10, 10, 10
(2) 10, 10, 20
(3) 10, 20, 20
(4) 10, 20, 40
Answers
Explanation:
Given that,
let us considered three forces in equilibrium and represents three sides of a triangle a,b and c.
let us considered three forces in equilibrium and represents three sides of a triangle a,b and c.We know that,
In the triangle, addition of the two sides is greater than the third side then the resultant might be zero but when addition of the two sides is less than the third side then the resultant can not zero.
Therefore, the resultant force will not be zero
(a+b)
(a+b)(a). a = 10, b = 10, c = 10
The resultant force is
(a+b)
(a+b)(20)<10(20)<10
The resultant force is zero.
(b). a = 10, b = 10, c = 20
The resultant force is
(a+b)
(a+b)(20)<20(20)<20
The resultant force is zero.
(c). a = 10, b = 20, c = 23
The resultant force is
(a+b)
(a+b)(30)<23(30)<23
The resultant force is zero.
(d). a = 10, b = 20, c = 40
The resultant force is
(a+b)
(a+b)(30)<40(30)<40
The resultant force is not zero.
Hence, The correct option is (d).
Answer:
answer given above is nice