An object is hanging by a string from the ceiling of an elevator. The elevator is slowing down while moving upward.
1 answer:
Answer:
The magnitude of the tension is less than the object's weight
Explanation:
As per the question:
From Fig. 1
The forces and the acceleration are shown in the figure
Since, the elevator slows down in its upward motion, this means that the final velocity is less than the initial velocity and the elevator decelerates.
Therefore, we take the acceleration as negative, '- a'.
Thus
Balancing the forces:
T - mg = m(- a)
T = mg - ma = m(g - a)
Thus it clearly shows T < mg
You might be interested in
Genius right dear friend
Answer:
Explanation:
Given
mass of sled =26 kg
coefficient of static friction
coefficient of kinetic friction
In order to move sled from rest we need to provide a force greater than static friction which is given by
After Moving Sled kinetic friction comes in to play which is less than static friction
therefore minimum force to keep moving sledge at constant velocity is 18.34 N