A plane is revolving around the earth with a speed of 100 km/hr at a constant height from the surface of earth. The change in the velocity as it travels half circle is

Question:

24. A plane is revolving around the earth with a speed of 100 km/hr at a constant height from the surface of earth. The change in the velocity as it travels half circle is

Options :

a) 200 km/hr
b) 150 km/hr
c) 100√2 km/hr
d) 0

Answer :

a) 200 km/hr

Answer Steps :

Solution :-

Method1 :-

Method2 :-

Method3 :-

step1 :-

Step2 :-

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Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be

If a body is executing simple harmonic motion then

Two simple harmonic motions of angular frequency 100 rad/sec and 1000 rad/s have the same displacement amplitude. The ratio of their maximum acceleration is

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Solution :-

Method1 :-

Method2 :-

Method3 :-

step1 :-

Step2 :-

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