Science

Force and Pressure

Question:

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:

We make use of muscular force to hold a bucket of water above the ground. This muscular force acts against the force of gravity that pulls the bucket towards the ground. The two forces are equal in magnitude but opposite in direction. Therefore, the net force on the bucket is zero. Hence, there is no change in its state of motion.
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Questions and Answers

Force and Pressure

Q 1.

Give two examples each of situations in which you push or pull to change the state of motion of objects.
Answer

Q 2.

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

Q 3.

Squeezing a piece of lemon between the fingers to extract its juice.
Answer

Q 4.

A load suspended from a spring while its other end is on a hook fixed to a wall.
Answer

Q 5.

Give two examples of situations in which applied force causes a change in the shape of an object.
Answer

Q 6.

An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. What force might be esponsible for the attraction between the balloon and the wall?
Answer

Q 7.

A blacksmith hammers a hot piece of iron while making a tool. How does the force due to hammering affect the piece of iron?
Answer

Q 8.

A rocket has been fired upwards to launch a satellite in its orbit. Name the two forces acting on the rocket immediately after leaving the launching pad.
Answer

Q 9.

Taking out paste from a toothpaste tube.
Answer

Q 10.

An athlete making a high jump to clear the bar at a certain height.
Answer