Question

NCERT VIII - Sciences

Name the forces acting on a plastic bucket containing water held above ground level in your hand. Discuss why the forces acting on the bucket do not bring a change in its state of motion.

Answer 1

when it is in water both buoyancy and gravitational force acts on it. when it is in land only gravitational force acts on it.

Answer 2

The forces acting on the plastic bucket containing water held above ground level in your hand are:

• Gravitational force

• Muscular force

Gravitational force: Gravitational force is force which is applied by Earth's gravity. The object is pulled along the earth because of gravitational force. In simple terms, Gravitational force is the the force between two objects with mass.

Muscular force: The force applied by muscles is called as Muscular force. This force is applied by the body parts like Arm, Leg, Hands etc..

Why the forces acting on the bucket do not bring a change in its state of motion ?

This is because, they are balanced or they have net force of 0. Because of which, The forces acting on the bucket do not bring a change in it's state of motion.

Also, muscular force acts upward direction and gravitational force acts downward. Hence, net force will be 0