Q16 of 20 Page 62

Match the events related to motion in Column I with the types of motions given in Column II.

(a) – (ii)


(b) – (i)


(c) – (iii)


(a) The wheel of a sewing machine rotates to do rotational motion. It has fixed axis for rotational motion.


(b) The tip of minute hand rotates around the clock fixed at one end performing circular motion.


(c) A moving swing moves to and fro to do periodic motion.


More from this chapter

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14

Identify the different types of motion in the following word diagram given as Fig. 10.8.

 15

Four children measure the length of a table which was about 2 m. Each of them used different ways to measure it.

(i) Sam measured it with a half metre long thread.


(ii) Gurmeet measured it with a 15 cm scale from her geometry box.


(iii) Reena measured it using her hand span.


(iv) Salim measured it using a 5 m long measuring tape.


Which one of them would get the most accurate length? Give reason for your answer.

 17

While travelling in a train, it appears that the trees near the track are moving whereas co-passengers appear to be stationary. Explain the reason.

 18

How are the motions of a wheel of a moving bicycle and a mark on the blade of a moving electric fan different? Explain.