# Curvilinear Motion - Mechanical Engineering (MCQ) questions and answers

1)   What is the path equation for a particle having x = 6t and y = 4t2 ?

a. x2 = 6y
b. x2 = 9y
c. y2 = 8x
d. y = 9x
 Answer  Explanation ANSWER: x2 = 9y Explanation: No explanation is available for this question!

2)   If a particle moves along a curved path, then what will be the normal component of velocity acting on the particle, if magnitude of tangential component of velocity is 30 m/s at an angle of 50o with the vertical?

a. 57.8 m/s
b. 68.9 m/s
c. 40.2 m/s
d. None of the above
 Answer  Explanation ANSWER: None of the above Explanation: No explanation is available for this question!

3)   When motion is _______, the normal component of acceleration is zero.

a. curvilinear
b. rotational
c. rectilinear
d. translation
 Answer  Explanation ANSWER: rectilinear Explanation: No explanation is available for this question!

4)   In curvilinear motion, what is the normal component of acceleration?

a. a2 / t
b. v2 / ρ
c. ρ / v
d. dv / dt
 Answer  Explanation ANSWER: v2 / ρ Explanation: No explanation is available for this question!

5)   What are the rectangular components of velocities in curvilinear motion?

a. dx/dt and dy/dt
b. dr/dt and d2r/dt
c. d2x/dt2 and d2y/dt2
d. none of the above
 Answer  Explanation ANSWER: dx/dt and dy/dt Explanation: No explanation is available for this question!

6)   A particle moves along a path y = x2 – 6x + 200. If vx = 6 m/s , what is the value of vy at x = 30?

a. 354 m/s
b. 300 m/s
c. 324 m/s
d. None of the above
 Answer  Explanation ANSWER: 324 m/s Explanation: No explanation is available for this question!

7)   A car moves along a circular arc at a speed of 30 m/s, if speed of the car is increased at the rate of 50 m/s2, what is the resultant acceleration of the car? (Radius of arc = 15 m)

a. 78.10 m/s2
b. 58.10 m/s2
c. 60.23 m/s2
d. 33.16 m/s2
 Answer  Explanation ANSWER: 78.10 m/s2 Explanation: No explanation is available for this question!

8)   What is the position of a particle A, if it moves along a path y = 2x3 / 3 with uniform velocity of 15 m/s?
( Assume vx = vy)

a. (0.33, 0.5)
b. (0.235, 0.707)
c. (0.577, 20.33)
d. (0.707, 0.235)
 Answer  Explanation ANSWER: (0.707, 0.235) Explanation: No explanation is available for this question!

9)   The radius of curvature of trajectory for a profile is minimum, if __________

a. velocity is minimum
b. acceleration is maximum
c. both a. and b.
d. none of the above
 Answer  Explanation ANSWER: both a. and b. Explanation: No explanation is available for this question!

10)   The radial component of velocity for a particle moving in circular path is ______

a. constant