A bobsled is pushed with a force of 190.08 N. The sled has a mass of 28 kg. What is the acceleration of the bobsled? Report to t
1 answer:
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Answer:
Explanation:
g = Acceleration due to gravity =
= Angle of slope =
v = Velocity of child at the bottom of the slide
= Coefficient of kinetic friction
= Coefficient of static friction
h = Height of slope = 1.8 m
The energy balance of the system is given by
The speed of the child at the bottom of the slide is
Length of the slide is given by
The force energy balance of the system is given by
The coefficient of kinetic friction is .
For static friction
So, the minimum possible value for the coefficient of static friction is .
Answer:
Explanation:
So suppose the axis of rotation is perpendicular to the surface of the disk, then the moment of inertia can be calculated as the following:
We can convert the rotation speed in term of 0.8 seconds per revolution to the angular velocity knowing that each revolution is 2π
Then the rotational angular momentum of the disk is:
In case the axis of rotation is parallel with the surface, the moment of inertia would have a formula of: