Two events are observed in a frame of reference S to occur at the same space point, with the second event occurring after a time
of 1.70 s . In a second frame S' moving relative to S, the second event is observed to occur after a time of 2.25 s . What is the difference between the positions of the two events as measured in S'?
1 answer:
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Answer: angular acceleration =
Given:
Distance from center of axis = 1.6 m
Time taken to complete one revolution = 4.7 sec
Therefore, we can evaluate the angular acceleration using the following formula:
=
Answer: 321 J
Explanation:
Given
Mass of the box
Force applied is
Displacement of the box is
Velocity acquired by the box is
acceleration associated with it is
Work done by force is
change in kinetic energy is
According to work-energy theorem, work done by all the forces is equal to the change in the kinetic energy
Therefore, the magnitude of work done by friction is