A screw jack with a Tommy bar of length 12cm is used to raise a car through a vertical height of 25cm by turning the Tommy bar through 50 revolutions. Calculate the approximate velocity ratio of the jack [$\pi = 3.142$]

Similar Questions

As a positively charge rod is brought nearer to the top cap of a positively charged gold leaf electr...

From the diagram above, determine the value of the resistance X ...

Which of the following phenomena explains the formation of a mirage? i. Reflection ii. Refractio...

During the same interval, it is observed that a train travels the same distance as does a lorry. The...

If a wire 30 cm long is extended to 30.5 cm by a force of 300 N. find the strain energy of wire...

Which of the following is a non-renewable energy source? ...

The conductivity of gases at low pressure can be termed as I. hot cathode emission II. thermo ioni...

Which of the following units is equivalent to kgms-1?...

If $\theta$ is equal to $\alpha$ at the time the box is just about to slide down the plank, the ...

The most appropriate value of fuse for a kettle rated 220 V, 1.06 kW is ...