Work

Author:Subrata Kumar Choudhury & Jibananda Paul
9th West Bengal Board
IMPORTANT

Important Questions on Work

EASY
IMPORTANT

The negative work is called the work done by the applied force.

EASY
IMPORTANT

Centripetal force is a no-work force.

EASY
IMPORTANT

Absolute unit of power in SI system is watt.

EASY
IMPORTANT

In a tug of war, the work done by losing team is positive.

MEDIUM
IMPORTANT

What is meant by work done by a force and work done against a force? Explain with suitable examples.

EASY
IMPORTANT

What happens to energy when work is done by a force?

EASY
IMPORTANT

A moving bullet possess _____ energy.

EASY
IMPORTANT

Work is a _____ quantity.

(Choose from: scalar/vector)

EASY
IMPORTANT

The work done, w=F.s is negative when

HARD
IMPORTANT

State the factors upon which the work done depends on. State and define the absolute and gravitational unit of work in SI system.