A cyclist has to bend a little inwards from his vertical position while turning. Why?

Why does a cyclist bend inwards while negotiating a curve ?

Why do light rays bend when they enter from one optical medium to another?

A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 second from his initial position?

A man walking briskly in, rain with speed v must slant his umbrella forward making an angle theta with the vertical. A student derives the following relation between theta and v, tantheta = v and checks that the relation has a correct limit: as v rarr 0, theta rarr -0 , as expected.. (We are assuming there is no strong wind and that the rain falls vertically for a stationary man). Do you think this relation can be correct? If not, guess the correct relation.

A particle of mass 10 g executing SHM has a velocity of 6cm s^(-1) after one second of its starting from the mean position. If the time period is 6 seconds, find its maximum kinetic energy.

A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces his speed at the constant rate of 0.50 m/s every second. What is the magnitude and direction of the' net acceleration of the cyclist on the circular turn?

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from?How can it be corrected?

You may have seen in a circus a motorcyclist driving in vertical loops inside a ‘death-well’ (a hollow spherical chamber with holes, so the spectators can watch from outside). Explain clearly why the motorcyclist does not drop down when he is at the uppermost point, with no support from below: What is the minimum speed required at the uppermost position to perform a vertical loop if the radius of the chamber is 25 m?

Why does a ray of light bend when it travels from one medium into another?