you’ve just been involved in a traffic accident that leaves you stranded on the side of the road. Which part of the EM spectrum
1 answer:
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Let us assume that pulley is mass less.
Let the tension produced at both ends of the pulley is T.
We are asked to calculate the acceleration of the block.
Let the masses of two bodies are denoted as
As per this diagram, the body having mass 1 kg is moving downward and the body having mass 2 kg is moving on the surface of the table.
Let the acceleration of each block is a .
For body having mass 1 kg:
The net force acting on 1 kg body will be-
[1]
Here tension in the rope will be vertically upward and weight of the body will be in vertical downward direction.
For body having mass 2 kg:
The coefficient of kinetic friction
Hence the net force acting on the body having mass 2 kg-
[2]
Here the tension of the rope is towards right i.e along the direction of motion of the 2 kg block and frictional force is towards left.
Combining 1 and 2 we get-
[1]
[2]
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[ans]
Answer:
Equal to the weight of the object
Explanation:
There are two forces acting on the object hanging on the string:
- The tension in the string, T, acting upward
- The weight of the object, mg, acting downward
We can write Newton's second law as:
where a is the acceleration of the object.
Here we are told that the elevator is moving at constant speed: this means that the acceleration of the object is zero, therefore a = 0 and the equation becomes
therefore, the tension in the string is equal to the weight of the object.