Determine the minimum applied force p required to move wedge a to the right. the spring is compressed a distance of 175 mm. negl
1 answer:
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Answer:
The speed of the apple will be 2.81 m/s when the arrow enters it.
Explanation:
We can find the speed of the apple by conservation of linear momentum:
Where:
is the mass of the apple = 100 g = 0.1 kg
is the mass of the arrow = 2.5 g = 0.0025 kg
and
is the initial and final speed of the apple respectively
and
is the initial and final speed of the arrow respectively
Since the apple was originally at rest ( = 0) and knowing that
=
when the arrow enters into the apple, we have:
Therefore, the speed of the apple will be 2.81 m/s when the arrow enters it.
I hope it helps you!
Answer:
Acceleration of the platform = - 1.8 m/s²
Explanation:
The net force acting on a body accelerates the body in the same direction as that in which the resultant is applied.
Writing the force balance for the setup,
ma = 800 - mg
100a = 800 - 100×9.8
100a = - 180
100a = - 180
a = - 1.8 m/s²
This means the body falls downwards.
