Wave Motion> 3...

A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time

t1 if the elevator is stationary and in time t2 if it is moving uniformly. Then:

(a) t1 = t2 (b) t1 < t2 (c) t1 > t2 or t1 < t2 depending on whether the lift is going up or down.

jeet jeetu , 12 Years ago

Grade 11

4 Answers

Anirban Mukherjee

Last Activity: 12 Years ago

If lift is moving with uniform velocity its same as its in rest

so t1=t2

Approved

G Ashwin -

Last Activity: 12 Years ago

when it moves with same speed/velocity

acceleration=0.

at rest also , a=0.

therefore,

t1=t2

Harmeet

Last Activity: 7 Years ago

When it`s dropped in uniform motion of elevator ,it`s the same distance covered by coin when dropped at rest.

Priyanshu Thakur

Last Activity: 5 Years ago

The answer is t1=t2 because there is no change in acceleration as it move uniformly .So there's is no change in time

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Wave Motion> 3...

A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time t1 if the elevator is stationary and in time t2 if it is moving uniformly. Then: (a) t1 = t2 (b) t1 < t2 (c) t1 > t2 or t1 < t2 depending on whether the lift is going up or down.

jeet jeetu , 12 Years ago

Anirban Mukherjee

G Ashwin -

Harmeet

Priyanshu Thakur

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A person standing on the floor of an elevator drops a coin. The coin reaches the floor of the elevator in a time

t1 if the elevator is stationary and in time t2 if it is moving uniformly. Then:

(a) t1 = t2 (b) t1 < t2 (c) t1 > t2 or t1 < t2 depending on whether the lift is going up or down.

A particle on a speing executes shm when the particle is found at x=xmax/2 the speed of the partcle is
A)vx=vmax
B)vx=√3vmax/2
C)vx=√2vmax/2
D)vx=vmax/2