Question

Which of the following objects is in static equilibrium?

A. An apple falling from a tree
B. A car moving at a constant velocity
C. A motorcycle speeding up
D. A bicycle sitting on the ground

Answer 1

Answer:-

`\longrightarrow \textsf{D. A bicycle sitting on the ground}`

Solution:-

Let us check all options -

• A) An apple falling from a tree is under the influence of gravity. Thus some force is acting on the apple and it can not said to be in state of equilibrium.

• B) A car moving at a constant velocity may said to be in state of equilibrium but the since the car is in motion ,equilibrium is dynamic in nature .Thus , it is not in static equilibrium.

• C) A motorcycle speeding up has some acceleration due to some forces. Thus it can also not be said in state of static equilibrium.

• D) Since the force acting on bicycle sitting down in zero as well as it is in state of rest , thus bicycle sitting on the ground may said to be in static equilibrium.