Question

A force 2f acts on a body creating an acceleration a . What will be the mass of the body

Answer 1

Answer:

The resultant of the forces F

1

and F

2

will be =

2

F.

Now,

Since F

3

is 135

o

to F

2

and resultant of F

1

andF

2

is 45

o

to F

1

i.e. both are in exactly opposite direction,

So total force acting on the body will be F

t

=F

3

−(resultant of F

1

andF

2

)

i.e. F

t

=

2

F−F=F(

2

−1)

So the acceleration on the body due to these three forces will be

a

f

=F

t

/m=(

2

−1)F/m=(

2

−1)ma/m=(

2

−1)a .

Answer 2

Answer:

force = mass × accelaration

= 2f = a × m

m = 2f/a

hope it helps you