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1 answer:
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Answer:
(a) The "angular speed" is 5.88 rad/s.
Explanation:
Given values,
The length of the bar is L = 2m
The weight of the bar is w = 90 N
The metal bar is hanging vertically from the ceiling by a frictionless pivot
The mass of the ball is m = 3kg
The distance between the ceiling and the ball is d = 1.5m
(a) Calculating the angular speed:
The angular speed is 5.88 rad/s.
(b) The "angular momentum" is conserved because the torque is not exerted by "the pivot" on the system about the "axis of rotation" but the "linear momentum" is not conserved because "the pivot" exerts a "vertical" and a "horizontal force" on the system during the collision.
Answer:
<h2>1.67 m/s²</h2>Explanation:
The car’s acceleration can be found by using the formula
where
v is the final velocity
u is the initial velocity
t is the time taken
a is the acceleration
From the question we have
We have the final answer as
<h3>1.67 m/s²</h3>Hope this helps you