Question

Hour hand of clock covers 3/4 of a clock.find the distance and displacement ofthe minute hand .length of minute hand is 1cm

Answer 1

ya... wait 5 minutes i will answer

Answer 2

When hour hand cover 3/4 (= 9 hour) of clock then minute hand complete 540 circle of clock .

length of minute hand = 1 cm

distance covered in complete one circle = 2πr = 2×22/7× 1

= 6.28

distance covered in complete 540 circle = 6.28×540

= 3391.2 cm

Distance = 3391.2 cm

displacement = minimum distance covered by minute hand = H

H² = P² + B²

H² = 1²+1²

H² = 2

H = √2

Displacement = √2 cm

Hope it helps you :)