The chart shows data for a moving object. A 2-column table with 3 rows. Column 1 is labeled time in seconds with entries 2, 4, 6
. Column 2 is labeled velocity in meters per second with entries 8, 8, 8. Which conclusion is best supported by the information in the chart?
The object has negative displacement.
The object has negative acceleration.
The object does not have displacement.
The object is not accelerating.
The object has negative displacement.
The object has negative acceleration.
The object does not have displacement.
The object is not accelerating.
1 answer:
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Answer : 413.44N
Here it is given that an elevator is moving down with an acceleration of 3.36 m/s² . And we are interested in finding out the apparent weight of a 64.2 kg man . For the diagram refer to the attachment .
- From the elevator's frame ( non inertial frame of reference) , we would have to think of a pseudo force.
- The direction of this force is opposite to the direction of acceleration the frame and its magnitude is equal to the product of mass of the concerned body with the acceleration of the frame .
- When a elevator accelerates down , the weight recorded is less than the actual weight .
From the Free body diagram ,
- Mass of the man = 64.2 kg
