Question

Which would require a greater force accelerating a 2 kg mass at 5 ms-2 or 4 kg mass at 2ms-2?

Answer 1

Answer:

2 Kg mass at 5ms-2

Explanation:

we know the formula

force=mass*acceleration

OR

F=m*a

now first case;

F=m*a

F=2*5

F=10N

now second case;

F=m*a

F=4*2

F=8N

from the answers obtained we can easily conclude that

greater force will be required to accelerate a a 2 kg mass at 5 ms-2 than 4 kg mass at 2ms-2

Answer 2

Answer:

Explanation:

We know,

F=ma

Case 1:

Force required to accelerate a 2 kg mass at 5m per sec square

=ma

=2×5 kgm/s^2

=10 N

Case 2:

Force required to accelerate a 4kg mass ar 2 m per sec sq.

=ma

=4×2 kgm/s^2

=8 N

Therefore the force required is greater in case 1.