Advertisements
Advertisements
प्रश्न
Work done by a force is equal to the product of ....... and ....
Advertisements
उत्तर
Applied force, displacement in the direction of the applied force.
APPEARS IN
संबंधित प्रश्न
Give the expression for mechanical advantage of an inclined plane in terms of the length of an inclined plane.
A man having a box on his head, climbs up a slope and another man having an identical box walks the same distance on a levelled road.
Who does more work against the force of gravity and why?
Differentiate between work and power.
Name the quality which is measured in kWh.
One horse power is equal to ______.
Name the quality which is measured in kW.
Derive a relation between the S.I. and C.G.S. unit of force.
The world record for weight lifting was held by Sergei Didyk of the USSR. He lifted 261 kg to a height of 2.3 m in 4s; find:
(a) Weight lifted by him
(b) Work done by him
(c) Power developed by him. (g = 10m/s2)
A coolie carries a load of 30 kgf through a distance of 500 m in 5 minutes while another coolie B carries the same load through the same distance in 10 minutes. Compare the
(i) work done, and
(ii) power developed. (Take: g = 10md−2)
A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).
