If it were possible to remove gravity and friction, think about what would happen to a football if it were tossed into the air.
2 answers:
You might be interested in
Answer:
The 3rd graph
Explanation:
A free body diagram is a diagram which shows all the forces acting on an object.
The problem asks us to find the free body diagram of block A, so we must find all the forces acting on block A.
We have 3 forces acting on block A in total:
- The force of gravity (its weight), which pushes the block downward (in the diagram, it is the force represented with
- The tension in the rope 1, which pulls block A upwards: this force is represented with
- The tension in the rope 2, due to the weight of block 2, which pulls block A downwards: this force is represented with
Based on the direction of these 3 forces, the correct diagram is the 3rd one.
Answer:
Explanation:
When the rock is immersed in unknown liquid the forces that act on it are shown as under
1) Tension T by the string
2) Weight W of the rock
3) Force of buoyancy due to displaced liquid B
For equilibrium we have
=
When the rock is suspended in air for equilibrium we have
When the rock is suspended in water for equilibrium we have
+
=
Using the given values of tension and solving α,β,γ simultaneously for we get
Solving for density of liquid we get
