Advertisements
Advertisements
प्रश्न
A machine raises a load of 750 N through a height of 16 m in 5 seconds. Calculate the power at which the machine works.
उत्तर
Power = `("Force"xx"Distance")/"Time"`
=`(750xx16)/5"watt"`
= 2400 watt.
= 2.4 KW.
APPEARS IN
संबंधित प्रश्न
A coolie X Carrying a load on his head climbs up a slope and another coolie Y carrying the identical load on his head move the same distance on a frictionless horizontal platform. Who does more work? Explain the reason.
A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60° with the force, and (iii) normal to the force. (g = 10 N kg-1)
State the condition when a force produces
(i) linear motion.
(ii) rotational motion, in a body.
What do you mean by equilibrium of a body?
What is a centripetal force?
Give the units of couple.
What do you understand by work? Is work a scalar or a vector quantity?
State two conditions for work to be done.
State the practical unit mainly used in mechanical engineering and write down its equivalent in watt.