1
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A space ship is launched into a circular orbit close to earth’s surface. What additional velocity has now to be imparted to the spaceship in the orbit to overcome the gravitational pull?

(Radius of earth = 6400 km, g = 9.8 m/s$$^2$$)

A
3.28 km/s
B
12 km/s
C
10 km/s
D
40 km/s
2
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A force $$\mathbf{F}=-k(y \hat{\mathbf{i}}+x \hat{\mathbf{j}})$$ where $$k$$ is a positive constant, acts on a particle moving in the $$x y$$ plane. Starting from the origin, the particle is taken along the positive $$x$$-axis to the point $$(a, 0)$$ and then parallel to the $$y$$-axis to the point $$(a, a)$$. The total work done by the force on the particle is

A
$$-2 k a^2$$
B
$$2 k a^2$$
C
$$-k a^2$$
D
$$k a^2$$
3
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

With what minimum acceleration can a fireman slide down a rope while breaking strength of the rope is $$2 / 3$$ of the weight?

A
2/3 g
B
g
C
1/3 g
D
zero
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

Four blocks of same mass connected by strings are pulled by a force $$F$$ on a smooth horizontal surface as shown in figure. The tension $$T_1, T_2$$ and $$T_3$$ will be

AIIMS 2017 Physics - Laws of Motion Question 9 English

A
$$T_1=\frac{1}{4} F, T_2=\frac{3}{2} F, T_3=\frac{1}{4} F$$
B
$$T_1=\frac{1}{4} F, T_2=\frac{1}{2} F, T_3=\frac{1}{2} F$$
C
$$T_1=\frac{3}{4} F, T_2=\frac{1}{2} F, T_3=\frac{1}{4} F$$
D
$$T_1=\frac{3}{4} F, T_2=\frac{1}{2} F, T_3=\frac{1}{2} F$$
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