1
AIPMT 2002
+4
-1
A lift of mass 1000 kg which is moving with acceleration of 1 m/s2 in upward direction, then the tension developed in string which is connected to lift is
A
9800 N
B
10,800 N
C
11,000 N
D
10,000 N.
2
AIPMT 2002
+4
-1
A block of mass 10 kg placed on rough horizontal surface having coefficient of friction m = 0.5, if a horizontal force of 100 N acting on it then acceleration of the block will be
A
10 m/s2
B
5 m/s2
C
15 m/s2
D
0.5 m/s2.
3
AIPMT 2001
+4
-1
250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3 m. the efficiency of pulley system will be
A
25%
B
33.3%
C
75%
D
90%
4
AIPMT 2001
+4
-1
On the horizontal surface of a truck a block of mass 1 kg is placed (m = 0.6) and truck is moving with acceleration 5 m/sec2 then the frictional force on the block will be
A
5 N
B
6 N
C
5.88 N
D
8 N
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