1
GATE ME 1998
MCQ (Single Correct Answer)
+1
-0.3
A car moving with uniform acceleration covers 450 m in a 5 second interval, and covers 700 m in the next 5 second interval. The acceleration of the car is
A
7m/s2
B
50m/s2
C
25m/s2
D
10m/s2
2
GATE ME 1996
MCQ (Single Correct Answer)
+1
-0.3
A ball A of mass m falls under gravity from a height h and strikes another ball B of mass m which supported at rest on a spring of stiffness k. Assume perfectly elastic impact. Immediately after the impact
A
the velocity of ball A is $${1 \over 2}\sqrt {2gh} $$
B
the velocity of ball A is zero
C
the velocity of both ball is $${1 \over 2}\sqrt {2gh} $$
D
None of the above
3
GATE ME 1996
MCQ (Single Correct Answer)
+1
-0.3
A wheel of mass m and radius r is in accelerated rolling motion without slip under a steady axial torque $$T$$. If the coefficient of kinetic friction is $$\mu $$, the friction force from the ground on the wheel is
A
$$\mu $$mg
B
$$T$$/r
C
zero
D
none of the above
4
GATE ME 1994
MCQ (Single Correct Answer)
+1
-0.3
A stone of mass m at the end of a string of length l is whirled in a vertical circle at a constant speed. The tension in the string will be maximum when the stone is
A
at the top of the circle
B
half-way down from the top
C
quarter was down from the top
D
at the bottom of the circle
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Turbo Machinery
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