Question

77. Force required in accelerating a 3kg mass
at 5 m/s2 and 4kg mass at 4 m/s2 will be
(A) zero in both cases.
(B) same in both cases.
(C) greater for 3 kg mass.
(D) greater for 4 kg máss.​

Answer 1

Answer:

Greater for 4 kg mass

Explanation:

Because as we know that F = m×a and the mass of the object is 4 and acceleration us also 4 which is equal to 16N Force . That is greater than the force of 15N of object A

Answer 2

Given - Mass and acceleration

Find - Force

Solution - Force, mass and acceleration are related as - Force = mass*acceleration.

For first case -

Force = 3*5

Performing multiplication

Force = 15 Newton

For second case -

Force = 4*4

Performing multiplication

Force = 16 Newton

So, force required is (D) greater for 4 kg mass.