Advertisements
Advertisements
प्रश्न
Why is a jack screw provided with a long arm?
Advertisements
उत्तर
A jack screw is provided with a long arm in order to have the effortless than the load. According to the principle of moments, load x load arm = effort x effort arm. So, if the load arm is more, then the effort will be more than the load.
APPEARS IN
संबंधित प्रश्न
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
The energy of a body is its capacity to do .........
How much work is done when a force of 2 N moves a body through a distance of 10 cm in the direction of force?
Nm is the unit of .......
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
A body does 20 J of work in 10 s. What is its power?
State the energy changes which take place when A toy car with a wound spring moves on ground.
How long should an electric motor, of power 2 H.P. operate, so as to pump 5 m3 of water from a depth of 15m. [Take g = 10 N kg−1]
