Advertisements
Advertisements
प्रश्न
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Advertisements
उत्तर
When a body is moved horizontally along a frictionless surface, the work done against gravity is zero because the direction of motion of the body is perpendicular to the direction of the gravitational force.
APPEARS IN
संबंधित प्रश्न
Define 1 J of work.
How much work is done when a body of mass m is raised to a height h above the ground?
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
On what factors does the work done by a force depend?
State larger units of power.
What is the difference between renewable and non-renewable resources?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
Suma is swimming in a pond.
A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
