Kinematics-Uniformly Accelerated Motion [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 6 - 10 of 48
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Question 6
Question MCQ▾
A grind stone starts from rest and has a constant-angular acceleration of 6.0 . The angular displacement and angular velocity, after 4 sec. will respectively be
Choices
Choice (4) | Response | |
---|---|---|
a. | 32 rad, 64 | |
b. | 48 rad, 24 | |
c. | 64 rad, 32 | |
d. | 16 rad, 32 |
Question 7
Question MCQ▾
The angular velocity of a particle is given by co = 5t - 3t2 + 1, the time when its angular acceleration decreases to be zero will be -
Choices
Choice (4) | Response | |
---|---|---|
a. | 25 sec | |
b. | 1.2 sec | |
c. | 0.83 sec | |
d. | 0.25 sec |
Question 8
Question MCQ▾
The magnitude of the linear acceleration of the particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4 s, will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | 2.5 π2 cm/s2 | |
b. | 2.5π cm/s2 | |
c. | 5 π cm/s2 | |
d. | 5 π2 cm/s2 |
Question 9
Question MCQ▾
The total mass of an elevator with a 80 kg man in it is 1000 kg. This elevator moving upward with a speed of 8 m/sec, is brought to rest over a distance of 16m. The tension T in the cables supporting the elevator and the force exerted on the man by the elevator floor will respectively be
Choices
Choice (4) | Response | |
---|---|---|
a. | 624 N, 78 N | |
b. | 624 N, 7800 N | |
c. | 78 N, 624 N | |
d. | 7800 N, 624 N |
Question 10
Question MCQ▾
A force produces an acceleration of 5 m/s2 in a body and same force an acceleration of 15 m/s2 in another body. The acceleration produced by the same force when applied to the combination of two bodies will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | 20 m/s2 | |
b. | 0.667 m/s2 | |
c. | 10 m/s2 | |
d. | 3.75 m/s2 |