An elevator suspended by a vertical cable is moving downward but slowing down. T
ID: 1498910 • Letter: A
Question
An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the cable must be A bucket is being lowered by a very light rope with a constant downward velocity. The tension in the rope must be You push on box G that is next to box H, causing both boxes to slides along the floor, as shown in the figure. The reaction force to your push is A small car and a large SUV are at a stoplight. The car has a mass equal to half that of the SUV, and the SUV can produce a maximum accelerating force equal to twice that of the car. When the light turns green, both drivers push their accelerators to the floor at the same time. Which vehicle pulls ahead of the other vehicle after a few seconds?Explanation / Answer
29. there are two forces acting on the elevator when the elevator is moving down,
1. the tension in the cable pulling up 2. gravity pulling down0.
due to this elevator is slowing down then it has a net acceleration upwards which means the upwards force must be greater than the weight due to gravity pulling downwards.
The tension is the cable is greater than the weight of the elevator
30. As the bucket is moving with constant downward velocity the weight and tension acts downwards.
therefore The tension is therope is equql to the weight of the elevator.
based on the cinditions I did first 2 problems
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