1
GATE ME 2006
+2
-0.6
If point A is in equilibrium under the action of the applied forces, the values of tensions and T AB and TAC are respectively.
A
520 N and 300 N
B
300 N and 520 N
C
450 N and 150 N
D
150 N and 450 N
2
GATE ME 2005
+2
-0.6
A shell is fired from a cannon. At the instant the shell is just about to leave the barrel, its velocity relative to the barrel is 3m/s, while the barrel is swinging upwards with a constant angular velocity of 2 rad/sec. The magnitude of the absolute velocity of the shell is
A
3 m/s
B
4 m/s
C
5 m/s
D
7 m/s
3
GATE ME 2005
+2
-0.6
An elevator (lift) consists of the elevator cage and a counter weight, of mass m each. The cage and the counterweight are connected by a chain that passes over a pulley. The pulley is coupled to a motor. It is desired that the elevator should have a maximum stopping time of t seconds from a peak speed $$V.$$ If the inertias of the pulley and the chain are neglected, the minimum power that the motor must have is
A
$${1 \over 2}m{V^2}$$
B
$${{m{V^2}} \over {2t}}$$
C
$${{m{V^2}} \over t}$$
D
$${{2m{V^2}} \over t}$$
4
GATE ME 2005
+2
-0.6
Two books of mass 1 kg each are kept on a table, one over the other. The coefficient of friction on every pair of contacting surfaces is 0.3. the lower book is pulled with a horizontal force F. the minimum value of F for which slip occurs nbetween the two books is
A
zero
B
1.06 N
C
5.74 N
D
8.83 N
GATE ME Subjects
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Medical
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