Question

the resultant of two forces is 10V2 Newton when one of them is 10 Newton and angle between two forces 90 then what is the value of the second force​

Answer 1

Step-by-step explanation:

Correct option is

A

1

Considering the diagram given,

Let the particles collide at the point A (shown in figure below), whose position vector is

r

3

(say). If t be the time taken by each particle to reach at point A, from triangle law of vector addition:

r

3

=

r

1

+

v

1

t=

r

2

+

v

2

t

so,

r

1

−

r

2

=(

v

2

−

v

1

)t (1)

therefore, t=

∣

v

2

−

v

1

∣

∣

r

1

−

r

2

∣

(2)

From equations (1) and (2)

r

1

−

r

2

=(

v

2

−

v

1

)

∣

v

2

−

v

1

∣

∣

r

1

−

r

2

∣

or,

∣

r

1

−

r

2

∣

r

1

−

r

2

=

∣

v

2

−

v

1

∣

v

2

−

v

1

, which is the sought relationship.

Answer 2

Answer:

10000000000000000ⁿ0000