Where will the hand of a clock stop if it starts at 5 and makes of a revolution, clockwise

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Question 2 d Where will the hand of a clock stop if it:Starts at 5 and makes 3/4 of a revolution, clockwise?

Solution

If the analogue clock is divided into 12 equal parts, then the clockwise movement of the hour hand covers 360∘ for a full revolution. 34 of the revolution means 270∘, which means after 9 hours. And 9 hours after 5 means at 2. Therefore the hour hand of the clock will stop at 2. MathematicsNCERT TextbookStandard VI

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Next: Ex 5.2, 2 (c) Important →

Ex 5.2, 2 Where will the hand of a clock stop if it (b) starts at 2 and makes (1 )/2 of a revolution, clockwise? 1 revolution = 12 hours 1/2 revolution = 6 hours So, clock will move 6 hours & stop at 8.

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Next: Ex 5.2, 3 (b) Important →

Ex 5.2, 3 Which direction will you face if you start facing (a) east and make 1/2 of a revolution clockwise? If we go from East & make 1/2 revolution clockwise We will face West.

1 complete revolution or full rotation, means a complete turn so it points back the same way.

Answer: a) The clock hand will stop at 6, b) The clock hand will stop at 8, c) The clock hand will stop at 8, d) The clock hand will stop at 2

Let's understand the concept of turning clockwise and anti-clockwise.

Explanation:

In one complete revolution, the clock hand moves 360° or 12 hours.

⇒ 1 revolution = 12 hours 

Using the unitary method, we have 

1/2 of a revolution = 12/2 = 6 hours

1/4 of a revolution = 12/4 = 3 hours

3/4 of a revolution = 3 × 12/4 = 9 hours

A) If the clock hand starts at 12 and makes 1/2 of a revolution, it would stop after 6 hours, that is, at 6 o'clock.

B) If the clock hand starts at 2 and makes 1/2 of a revolution, it would stop after 6 hours, that is, at 8 o'clock.

C) If the clock hand starts at 5 and makes 1/4 of a revolution, it would stop after 3 hours, that is, at 8 o'clock.

D) If the clock hand starts at 5 and makes 3/4 of a revolution, it would stop after 9 hours, that is, at 2 o'clock.

Therefore, a) The clock hand will stop at 6, b) The clock hand will stop at 8, c) The clock hand will stop at 8, d) The clock hand will stop at 2