Shortcut Methods
Shortcut Methods and Tricks for Solving Numericals
Numerical 1:
- Solution:
- Work done = Force * Distance moved in the direction of the force
- In this case, the block is moved vertically upward, against the force of gravity.
- Therefore, the work done by the force of gravity is negative.
Numerical 2:
- Solution:
- The potential energy stored in a spring is equal to the work done in stretching or compressing the spring.
- In this case, the work done in stretching the spring is equal to the potential energy stored in the spring.
Numerical 3:
- Solution:
- The maximum height reached by a projectile is equal to the square of its initial velocity divided by twice the acceleration due to gravity.
- In this case, the initial velocity of the ball is 10 m/s and the acceleration due to gravity is -9.8 m/s^2.
