ICSE Class 10th Science Chapter 1 - Force Important Questions with Answers

A hollow ice cream cone has height 6 cm.

1. Where is the position of its center of gravity from the broad base?
2. Will its position change when it is filled completely with honey? Write Yes or No.

A moment of couple has a tendency to rotate the body in an anticlockwise direction. Then the moment of couple is taken as ______.

A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.

1. If this rod is cut at the centre C, then compare the weight of AC to the weight of BC.
2. Give a reason for your answer in (a).

A person standing in front of a cliff fires a gun and hears its echo after 3s. If the speed of sound in air is 336 ms^-1

1. Calculate the distance of the person from the cliff.
2. After moving a certain distance from the cliff, he fires the gun again, and this time the echo is heard 1.5 s later than the first. Calculate the distance that the person moved.

A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread

The distance between two bodies is doubled. How is the magnitude of the gravitational force between them affected?

A uniform half meter rule balances horizontally on a knife-edge at 29 cm mark when a weight of 20 gf is suspended from one end

1) Draw a diagram of the arrangement

2) What is the weight of the half meter rule?

How does uniform circular motion differ from uniform linear motion?

Give an example of a non-contact force which is always of attractive nature

How does the magnitude of this non-contact force on the two bodies depend on the distance of separation between them?