Question

when a force of 40N is applied on a body it moves with an acceleration of 5ms-2. calculate the mass of the body​

Answer 1

Given :

• Force applied to the body, F = 40 N
• Acceleration produced in the body, a = 5 ms⁻²

To find :

• Mass of the body, m = ?

Knowledge required :

• Newton's second law of motion

According to Newton's second Law of motion If a net force works on a body then, it will cause acceleration. unless there is no other external force.

    F = m a

[ When on applying force F on an object of mass m to produce acceleration a such that Direction of force applied and direction of acceleration is same or parallel ]

Calculation :

Using Newton's second law

→ F = m a

→ 40 = m ( 5 )

→ m = 40 / 5

→ m = 8 kg

Therefore,

• Mass of the body is 8 kg .

Answer 2

Answer:

8Kg

Explanation:

W=m×g,where M=mass,W=weight,G=acceleration due to gravity

M=W/G

M=40/5

M=8Kg