ICSE ICSE Class 8 - CISCE Question Bank Solutions for Physics

Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.

The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance of force from that point.

The mass of an empty density bottle is 30 g, it is 75 g when filled completely with water and 65 g when filled completely with a liquid. Find density of liquid.

A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.

A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.

The mass of an empty density bottle is 30 g, it is 75 g when filled completely with water and 65 g when filled completely with a liquid. Find relative density of liquid.

A wheel of diameter 2 m can be rotated about an axis passing through its center by a moment of force equal to 2.0 Nm. What minimum force must be applied on its rim?

The spanner (or wrench) has a long handle.

State one way to obtain greater moment of a given force about a given axis of rotation.

Define the moment of force.

What is meant by the inter-molecular forces of attraction ?

The molecules move only within the boundary of

For a given thrust, pressure is more on a surface of large j area.

The pressure on a surface increases with an increase in the thrust on the surface.

A man exerts same pressure on the ground whether he is standing or he is lying.

It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.

The S.I. unit of pressure is pascal.

Water in a lake exerts pressure only at its bottom.

1 kgf = .............. (nearly).

The unit of thrust is  ..........