Advertisements
Advertisements
प्रश्न
How much energy is gained by a box of mass 20 kg when a man, raises the box by 0.5 m in order to place it inside the bus? (g=10 m/s-2)
Advertisements
उत्तर
Height to which the box is raised h = 0.5 m
∴ Energy gained = mgh
= 20 × 10 × 0.5 m
= 100 J
APPEARS IN
संबंधित प्रश्न
State two factors on which the potential energy of a body at a certain height above the ground depends.
Write the expression for the gravitational potential energy explaining the meaning of the symbols used.
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find the work done in lifting the body.
The gravitational potential energy stored in a box of weight 150 kgf is 1.5 × 104 J. Find the height of the box. Take 1 kgf = 10 N.
Is potential energy a vector or a scalar quantity?
A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy does he gain? (g = 9.8 m/s2)
The potential energy of your body is least when you are ______.
Potential energy and heat energy are the two forms of mechanical energy.
Which of the following is the example potential energy?
The potential energy is
