table clock has its minute hand 4 cm long the average velocity of the tip of the minute hand between 6:00 a.m. to 6:30 p.m. is
Answers
Answered by
1
) 0.01cms
b) 0ms
Explanation:
This is an edit to my previous wrong answer. Apologies for any inconveniences.
Velocity=Displacementtime
9cm=0.09m
a) From 3am to 3:30 am, it makes 12 revolution in 30min=30⋅60s
But, the displacement of the tip is just 2 × length of the minute hand.
So, v=2⋅0.0930⋅60
⇒v=0.0001ms OR 0.01cms to 5 s.f
b) From 3am to 3 pm, it completes 12 revolutions.
But the displacement is 0 (it's returns to the same point at the label 12).
So, v=012⋅60⋅60=0ms
b) 0ms
Explanation:
This is an edit to my previous wrong answer. Apologies for any inconveniences.
Velocity=Displacementtime
9cm=0.09m
a) From 3am to 3:30 am, it makes 12 revolution in 30min=30⋅60s
But, the displacement of the tip is just 2 × length of the minute hand.
So, v=2⋅0.0930⋅60
⇒v=0.0001ms OR 0.01cms to 5 s.f
b) From 3am to 3 pm, it completes 12 revolutions.
But the displacement is 0 (it's returns to the same point at the label 12).
So, v=012⋅60⋅60=0ms
Similar questions