define si unit of force if force of 2n is acting on body changes its velocity uniformly from 2m/s to 5/s in 10s . calculate mass of body.
Answers
Answer:-
✧ Product of mass and acceleration is called force. Or
A push or pull of an object is called force.
✧ SI unit of Force is Newton.
✧ It is denoted by N.
✧ Force is vector Quantity i.e., both Magnitude and direction.
→ Force = Mass×Acceleration
1Newton :- If force acting on a body of mass 1 kg and produce acceleration of 1 m/s² in the body.Then, the force acting on it is said to be 1 Newton.
Now , Numerical
Given:-
- Force (F) = 2N
- Time taken (t) = 10s
- Initial velocity (u) = 2m/s
- Final velocity (v) = 5m/s
To Find:-
- Mass of the Body (m).
Solution:-
As we know that The Rate of change of velocity at per unit time is called acceleration.
By using this formula
→ a = v-u/t
Substitute the value we get
→ a = 5-2/10
→ a = 3/10 = 0.3m/s²
Now, we have to find the Force.
→ F = m×a
Substitute the value we get
→ 2 = m× 0.3
→ m = 2/0.3
→ m = 2×10/3
→ m = 6.66 kg
∴ The mass of the body is 6.66kg.
Answer:
m = 2/0.3
Explanation:
F = 2N
u = 2 m/s
v = 5 m/s
t = 10 sec
to find mass first we have to find the acceleration
a = (v - u)/ t
= (5 - 2 / 10
= 0.3
a = 0.3 m/s^2
as we all know that
F = ma
2 = m×0.3
m = 2/0.3
=6.666