Which the pilot presses the seat at the highest position is

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Reference no: EM131063403

1. A ball of mass 0.1 kg, initially at rest, is dropped from height of 1 m. Ball hits the ground and bounces off the ground. Upon impact with the ground, its velocity reduces by 20%. The height (in m) to which the ball will rise is:

1) 0.61

2) 0.62

3) 0.63

4) 0.64

2. A mass m1of 100 kg travelling with a uniform velocity of 5 m/s along a line collides with a stationary mass m2of 1000 kg. After the collision, both the masses travel together with the same velocity. The coefficient of restitution is:

1) 0.6

2) 0.1

3) 0.001

4) 0

3. A fighter plane flying in the sky dives with a speed of 120 m/sec in a vertical circle of radius of 100 m. Mass of the pilot is 80 kg. Force with
which the pilot presses the seat at the highest position is :

1) 10720 N

2) 15000 N

3) 8000 N

4) 12720 N

4. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base,
is __________ than that passing through its C.G. and parallel to the base.

1) Nine times

2) Six times

3) Four times

4) Two times

5. A simple pendulum of length of 5 m, with a bob of mass 1 kg, is in simple harmonic motion. As it passes through its mean position, the bob has

Reference no: EM131063403

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