Question

Two forces 3and4N act on a body of mass 5kg at right angles. Find acceleration of the body.

Answer 1

Answer:

we know ,f=ma

a=f/m

a=4+3/5

a=7/5

Answer 2

Answer:

1

Explanation:

As we know the 2 forces i.e. 3N and 4N are acting perpendicular to the body so their cos components will be zero and now sin90 = 1, so the forces will be 3N and 4N. The resultant force will be

$f = \sqrt{4 {}^{2} } + 5 {}^{2} = \sqrt{9 + 16} = \sqrt{25 } = 5$

therefore the resultant force will be 5N

The accelerarion of the body:

As we know

F=ma

5=5×a

a=1