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Sagot :
A mass-containing crate must stop with a net effort of 24.63 joules.
When a physical influence called force is imparted to an item, the object accelerates in the direction the force was applied from. The amount of matter that makes up an object is expressed by its mass, which is expressed in kilograms. The rate at which an object's velocity along the same straight line as the unbalanced force changes is known as its acceleration.
Force and Mass
According to the question,
Mass, m = 72 kg
Speed, v = 1.89 m/s
Acceleration due to gravity, g = 9.8
We know,
The force, F = mg
By substituting the values,
= 72×1.89
= 136.08 N
By using Equation of motion,
v² = u² + 2gS
(1.89)² = 0 + 2ₓ 9.81 S
3.57 = 19.62 S
S = 3.57 / 19.62
S = 0.181 m
hence,
The work done (W) will be:
= F × S
= 136.08 ₓ 0.181
= 24.63 joule
To know more about force and mass visit:-
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