Get premium membership
and access revision papers with marking schemes, video lessons and live classes.
(a) State two ways in which the centripetal force on a body of mass m can be increased.
(b) Figure 7 shows an object at the end of a light spring balance connected to a peg using a string. The object is moving in a circular path on a smooth horizontal table with a constant speed.
(i) State what provides the centripetal force.
(ii) Indicate with an arrow on the figure the direction of the centripetal force.
(iii) State a reason why the object is accelerating while its speed remains constant.
(iv) Given that the mass of the object is 0.5 kg and it is moving at a speed of 8 m/s at a radius of 2m, determine the reading on the spring balance.
(KCSE 2013 paper 1 question 14 (a) and (b))