Advertisements
Advertisements
प्रश्न
Its moment of a force scalar or a vector quantity?
Advertisements
उत्तर
The moment of force is a vector quantity.
APPEARS IN
संबंधित प्रश्न
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
If the work done by a force in moving an object through a distance of 20 cm is 24.2 J, what is the magnitude of the force?
Name the physical quantity whose SI unit is Nm.
Define 'joule'.
A block of mass 20 kg is pulled up a slope (fig.12) with a constant speed by applying a force of 500 N parallel to the slope. A and B are initial and final positions of the block.
(a) Calculate the work done by the force in moving the block from A and B.
(b) Calculate the potential energy gained by the block.
A bullet is of mass 'm' g and is moving with a velocity 'v' m/s. Find the kinetic energy of the bullet when
(a) The mass is doubled,
(b) The velocity is tripled.
Calculate the work done when:
A 5 kg weight is lifted 10 m vertically. (g = 9.8 m/s2)
