1What is a wheel and axle? Write with two examples.
2Show that the velocity ratio of a wheel and axle is R/r.
3Why is the wheel and axle called a continuous lever?
4Why is a truck's steering wheel made larger than a car's steering wheel?
5Why is the effort applied from the axle side when string has to be wound quickly on a kite reel?
6The wheel of a wheel and axle has a radius of 24 cm and the axle has a radius of 6 cm. Find the velocity ratio.
7When does a wheel and axle speed up the work and when does it magnify the force? Distinguish with examples.