When a body moves round a fixed axis, it has a rotary motion a circular motion a

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Question
When a body moves round a fixed axis, it has
Options
A. a rotary motion
B. a circular motion
C. a translatory
D. a rotary motion and translatory motion.

Correct Answer

a circular motion

Applied Mechanics problems

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3. A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was
Options
A. 0.5 m/sec²
B. 0.7 m/sec²
C. 1 m/sec²
D. 1 cm/sec².

4. If a particle moves with a uniform angular velocity ? radians/sec along the circumference of a circle of radius r, the equation for the velocity of the particle, is
Options
A. v = ?
B. y = ? y - r
C. v = ?
D. v = ?

5. A train weighing 196 tonnes experiences a frictional resistance of per tonne. The speed of the train at the top of a down gradient 1 in 78.4 is 36 km/hour. The speed of the train after running 1 km down the slope, is
Options
A. 510 m/sec
B. 105 m/sec
C. 53 m/sec
D. 35 m/sec.

6. If a body is acted upon by a number of coplaner non-concurrent forces, it may
Options
A. rotate about itself without moving
B. move in any one direction
C. move in any one direction rotating about itself
D. be completely at rest
E. all the above.

8. The displacement of a particle which moves along a straight line is given by S = 4t³ + 3t² - 10 where S is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is
Options
A. sec
B. 1 sec
C. 1.5 sec
D. 1.5 sec.

9. Pick up the incorrect statement from the following. In a simple harmonic motion
Options
A. velocity is maximum at its mean position
B. velocity is minimum at the end of the storke
C. acceleration is minimum at the end of the stroke
D. acceleration is zero at the mean position.

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