Gravitation And Work Power, Energy Questions With Answers

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1.A bullet of mass m traveling with an initial velocity v strikes a stationary wooden block of mass M, which is suspended. After the collision, the block rises to a height h. Determine the initial velocity v of the bullet.

2. Work done in time t on a body of mass m which is accelerated from rest to a speed v in time t1 as a function of time t is given by

3. If g is the acceleration due to gravity on the surface of the earth, its value at a height equal to double the radius of earth is

4. If g is the acceleration due to gravity on the surface of the Earth, what is its value at a depth equal to half the radius of the Earth?

5. At what height above the surface of the Earth will the acceleration due to gravity be reduced to \( g/16 \)?

6. If the value of g at the surface of the Earth is \( 9.8 \, \text{m/s}^2 \), what is its approximate value at a height equal to the radius of the Earth?

7. The ratio of the acceleration due to gravity at the surface of the Earth to that at a height equal to the radius of the Earth is:

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