A projectile is projected with 3 ICAP 4 j cap 5 I camp m per secon...
Answer:
Given:
- Projectile is projected with 3i + 4j + 5k m/s
- Projection is taken as origin and East north and vertically upward direction and taken as positive x y z directions respectively
- Acceleration due to gravity is 10 m/s²
To Find:
- Location of particle when it is at its maximum height
Solution:
Step 1: Initial Velocity of Projectile
- The initial velocity of the projectile is given as 3i + 4j + 5k m/s
Step 2: Maximum Height Reached by Projectile
- The maximum height reached by the projectile can be calculated using the formula:
- H = u²sin²θ / 2g
- Where H = maximum height, u = initial velocity, θ = angle of projection, g = acceleration due to gravity
- As the angle of projection is not given, we can assume that the projectile is projected at an angle of 45°
- Therefore, θ = 45°
- Substituting the given values, we get:
- H = (3² + 4² +5²) / (2 * 10) = 5.5 m
Step 3: Time Taken to Reach Maximum Height
- The time taken by the projectile to reach the maximum height can be calculated using the formula:
- t = usinθ / g
- Substituting the given values, we get:
- t = (3i + 4j + 5k)sin45° / 10 = 0.56 s
Step 4: Location of Particle at Maximum Height
- At the maximum height, the velocity of the projectile becomes zero
- Therefore, the time taken to reach maximum height is equal to the time taken for the projectile to reach the maximum height and come back to the ground
- The location of the projectile at the maximum height can be calculated using the formula:
- s = ut + 1/2at²
- As the projectile is at its maximum height, the vertical component of the displacement is equal to the maximum height reached by the projectile, i.e., 5.5 m
- The horizontal component of the displacement is zero, as the projectile does not move horizontally at the maximum height
- Therefore, the location of the projectile at the maximum height is:
- s = 3i + 4j + 5.5k m
Final Answer:
- The location of the particle when it is at its maximum height is 3i + 4j + 5.5k m.
A projectile is projected with 3 ICAP 4 j cap 5 I camp m per secon...
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