Question 8 of the book UNCERSTANDING ISC MA
8. Find the angle in radians through which a pendulum swings if its length is
tip describes an arc of length
(ii) 15 cm.
9. Find the radius of the circle in which a central angle of 450 makes an arc of
Find the length of an arc of a circle of diameter 20 cm which subtends an
the centre.
An engine is travelling along a circular railway track of radius 1500 metres
of 60 km/h. Find the angle in degrees turned by the engine in 10 seconds.
f the arcs of the same length in two circles subtend angles of 650 and
•spective centres, find the ratio of their radii.
rge hand of a clock is 21 cm long. How much distance does its extrk
minutes?
IVhich a oendulum swings if its leng
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